Thunderbird:Testing:Antivirus Related Performance Issues: Difference between revisions

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-{| width="80%" cellspacing="0" cellpadding="0" border="0"
+{| width="65%" cellspacing="0" cellpadding="0" border="0"
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+| width="490" valign="top" | __TOC__
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-'''This article is not just about performance issues.'''  Antivirus software can also [[Thunderbird:Testing:Antivirus_Related_Performance_Issues#symptoms|cause bad or incorrect behavior, and random or consistent crashes]].
+'''This article is not just about performance issues.'''  Antivirus software can also [[Thunderbird:Testing:Antivirus_Related_Performance_Issues#symptoms|cause odd behavior (bad, incorrect or unusual), and crashes (random or consistent, infrequent or frequent)]].
-<br><br>The information below is anecdotal, users like you giving their personal experiences. These are not the result of organized testing. So if you have a problem that is not listed here, please help other users by adding your experience to the list. (create a wiki account, and select edit)
+<br>Much of the information below is from users like you.
+<br>If you have a problem that is not listed here, please add it to the list so other users can benifit. (create a wiki account, and click "edit")
 {| width="220" cellspacing="1" cellpadding="2" border="1" align="center" summary="List of other pages related to this one"
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 = Symptoms  =
-Possible symptoms, which can be consistent or random:
+Possible behaviors:
-* Mild to severe poor performance
+* Mild to severe slowness
 * Not able to get new mail
 * OS hangs or crashes
+* Images not displaying
-Including but not limited to doing the following:
+... while doing the following:
 * Starting Thunderbird
-* Images not displaying
 * Opening file attachments
 * Selecting a different folder
-* Opening/displaying a message
+* Opening / displaying a message
 * Moving messages to a different folder
 * Replying to a message / Sending a message
-* Downloading or attempting to get new messages
+* Downloading or attempting to get new messages (receiving mail)
-* Initial mailbox indexing when upgrading to 3.0.1 from a previous version
+* Initial mailbox indexing for global search
+= My Problem Cannot be Caused by Antivirus =
+My Antivirus software has been working great. Thunderbird is the only program that is affected. I even tried disabling my antivirus software.
-{{Warning|Your AV software probably worked great for ages, in previous versions of Thunderbird.  But that is NO guarantee it will work well now, or in any future version of AV or Thunderbird.  AV or Thunderbird updates or version changes can cause interaction problems - even if Thunderbird is the only software affected, and even if your AV version did not change. ''You must explicitly test by disable/enable of AV to determine the impact on Thunderbird.'' The quickest way to test, is to [http://bit.ly/1MU6eMa start Windows in safe mode].'''}}
+{{Warning|Your antivirus software probably worked great for months or years, across many previous versions of Thunderbird. But this is NO guarantee it is working correctly now. Antivirus and Thunderbird have a complex relationship, and that relationship can be broken by updates or version changes of <u>either</u> software. Yes even if Thunderbird is the only software affected, even if your AV version did not change. AV vendors don't always play nice, and don't always adapt their software to new versions of other software on your computer, whether you know it or not they do make accommodations under the hood for how they interact with other software. In short, if TB performance is good when AV software has been disabled, doesn't make this fundamentally a bug in Thunderbird, although there are certainly areas of Thunderbird performance that can be improved.}}
 = First Steps =
-The quickest way to test in impact of other software on Thunderbird is to [http://bit.ly/1MU6eMa start Windows in safe mode].'''
+'''A quick test of the impact of antivirus software (AV) is [http://bit.ly/1MU6eMa starting Windows in safe mode], or [https://support.apple.com/en-us/HT201262 starting Mac in safe mode].'''  If your problem is gone with the operating system in safe mode, then the cause can be antivirus or some other software loading during the OS startup.
+* '''*NOTE, testing by disabling antivirus using AV settings has proven over the years to not be a perfect or sufficient test, because sometimes AV setting changes are not effective. Therefore the only perfect test is OS in safe mode.'''
+* '''If you determine AV to be a problem, then you must either disable the AV feature affecting Thunderbird (typically by excluding the Thunderbird profile), or change to a different AV program.'''
+** '''If you have altered Thunderbird to put your profile account data in a nonstandard file location then you MUST set your antivirus software to exclude these nonstandard locations.'''
+= Testing Suggests My Problem is Caused by Antivirus Software =
+If safe mode or other adjustments suggest that antivirus may be causing your problem, you have the following choices:
+* Adjust the exclusions in the antivirus software settings to stop the problem. '''%%'''
+* Turn off features in antivirus software that are not absolutely necessary. '''%%''' Some features are included to make the vendor look good against their compeition, but don't actually make you much safer.
+* Inform the antivirus vendor, and be persistent in getting past a canned response that their software is not at fault.
+* Find a different antivirus software or vendor that offers more reliable service.
-{{Warning|Your AV software has probably worked great for ages.  That is NO guarantee it will work well in any future version of AV or Thunderbird.  When either one changes version there can be interaction problems - even if for you Thunderbird is the only software affected, and even if your AV version did not change. ''You must explicitly test by disable/enable of AV to determine the impact on Thunderbird.'' The quickest way to test, is to [http://bit.ly/1MU6eMa start Windows in safe mode].'''}}
+'''%% You might find suggestions below, on an antivirus website or support site, or in [https://mzl.la/2D8RjeN a bug report which flags antivirus in the whiteboard].'''
 = Problem Antivirus and Anti-Malware Packages  =
-To test whether Antivirus or Anti-Malware software is causing a problem, you must disable the software temporarily or [http://bit.ly/1MU6eMa run Windows in safe mode]. Permanent solutions might require you to disable parts of the software, change to different software, or exclude Thunderbird profile folder locations from scanning. The default profile location on Windows is [https://support.mozilla.org/en-US/kb/profiles-tb '''%appdata%\thunderbird\profiles''']  **NOTE, if you altered default profile location or Thunderbird accounts to put mail somewhere on disk other than the standard profile location, you will need to also exclude those nonstandard locations.
+Please see the sections above before proceeding.
 Problems have been reported with:
@@ Line 59: / Line 73: @@
 *AVAST Free Antivirus 2014 ed [http://forums.mozillazine.org/viewtopic.php?p=12952031#p12952031], [https://support.mozilla.org/en-US/questions/1098819]
 *[[Thunderbird:Testing:Antivirus_Related_Performance_Issues#AVG|AVG]]
-* Avira antivirus [http://forums.mozillazine.org/viewtopic.php?p=14377061#p14377061 slow Mac], [https://getsatisfaction.com/mozilla_messaging/topics/thunderbird_17_on_mac_is_slow#reply_10981651 slow Mac], [https://getsatisfaction.com/mozilla_messaging/topics/cant_compact_my_box blocks compact]
+* Avira antivirus [http://forums.mozillazine.org/viewtopic.php?p=14377061#p14377061 slow Mac], [https://getsatisfaction.com/mozilla_messaging/topics/thunderbird_17_on_mac_is_slow#reply_10981651 slow Mac], [https://getsatisfaction.com/mozilla_messaging/topics/cant_compact_my_box blocks compact], [https://bugzilla.mozilla.org/show_bug.cgi?id=1425279], [https://support.mozilla.org/en-US/questions/1194726]
-*Bitdefender [https://support.mozilla.org/en-US/questions/1098049], [http://forums.mozillazine.org/viewtopic.php?f=39&t=1973177&p=10075691#p10075691] [https://getsatisfaction.com/mozilla_messaging/topics/does_tbird_24_3_0_run_very_slow (Expired GSFN article, solved by reinstalling BD)], you may need to disable BD
+*Bitdefender solved by disabling BD or adding exception for Thunderbird: [https://support.mozilla.org/en-US/questions/1288875], [https://support.mozilla.org/en-US/questions/1277253 crashes Thunderbird], [https://support.mozilla.org/en-US/questions/1098049], [http://forums.mozillazine.org/viewtopic.php?f=39&t=1973177&p=10075691#p10075691], tbird_24 very slow - solved by reinstalling BD.  Mail not retrieved fixed by disabling the Anti Spam feature. [https://support.mozilla.org/en-US/questions/1280635], Mail is labelled spam and disappears (deleted on restart) [https://support.mozilla.org/en-US/questions/1403964]
 *BullGuard {{bug|537769}} and [http://forums.mozillazine.org/viewtopic.php?f=39&t=2007131] (see BullGuard solution below)
 *Cloudmark Desktopone [http://forums.mozillazine.org/viewtopic.php?p=13221737#p13221737]
 *Emsisoft Anti-Malware, Guard option [http://getsatisfaction.com/mozilla_messaging/topics/thunderbird_6_slower_at_sending_emails#reply_6588919]; [http://support.emsisoft.com/topic/2894-thunderbird-slows-to-a-crawl/ Nov2010 TB and Emsisoft forum post] indicates slowness may have been around since TB 3 days
 *Emsisoft Online Armor firewall - thunderbird must be set as a "trusted" program [https://getsatisfaction.com/mozilla_messaging/topics/thunderbird_10_0_02_is_so_slow_as_to_be_almost_unusable#reply_8224968] [http://support.emsisoft.com/topic/4023-online-armour-slowing-thunderbird/]
-*Eset NOD32 [[https://support.mozilla.org/en-US/questions/1122731]], {{Bug|541197}}, [[http://gsfn.us/t/pavl getsatisfaction report]] <br>Repeated attempts to create huge temporary file during message synchronization due to Eset NOD32 causes slow gloda indexing
+*Eset NOD32 [https://support.mozilla.org/en-US/questions/1272471 hangs, and network/file errors], [https://support.mozilla.org/en-US/questions/1122731], {{Bug|541197}} <br>Repeated attempts to create huge temporary file during message synchronization due to Eset NOD32 causes slow gloda indexing ,  Password prompts not appearing when POP3S scanner is enabled in ESET settings [https://support.mozilla.org/en-US/questions/1199185#answer-1063288]
 *F-Prot (see Solution for F-Prot Antivirus below)
 *F-Secure causes Mac OS X to be slow: [http://forums.mozillazine.org/viewtopic.php?f=39&t=3026186], {{Bug|1328177}}
-*Kaspersky [https://getsatisfaction.com/mozilla_messaging/topics/receiving_email_is_very_slow#reply_10199388]
+*Kaspersky [https://support.mozilla.org/en-US/questions/1434180 SMTP server not working after migration to outlook exchange.][https://getsatisfaction.com/mozilla_messaging/topics/receiving_email_is_very_slow#reply_10199388]
 *Malaware free AV [https://getsatisfaction.com/mozilla_messaging/topics/running_so_slow#reply_9552090]
 *McAfee: Main [[Thunderbird:Testing:Antivirus_Related_Performance_Issues#McAfee|McAfee topic below]] [https://support.mozilla.org/en-US/questions/1094984 McAfee Active Protection] {{bug|544684}} shutdown hang, [https://getsatisfaction.com/mozilla_messaging/topics/thunderbird_is_slow_to_launch slow startup], {{bug|1015437}} Slow getting mail
-*Microsoft Security Essentials aka MSE (Settings | Excluded Files &amp; Folders | add [https://support.mozillamessaging.com/en-US/kb/profiles#w_where-is-my-profile-stored your profile folder], typically c:\users\-your-user-name-\appdata\roaming\thunderbird **) [http://getsatisfaction.com/mozilla_messaging/topics/thunderbird_very_slow_with_microsoft_security_essentials?utm_content=reply_link&utm_medium=email&utm_source=reply_notification#reply_12390513] [https://getsatisfaction.com/mozilla_messaging/topics/thunderbird_slow-yvp58] [http://groups.google.com/group/mozilla.support.thunderbird/browse_thread/thread/93ab6d849bd87918] [http://groups.google.com/group/mozilla.support.thunderbird/browse_thread/thread/84767c1397f8d560/d2ec367b9d781522?lnk=raot] [https://getsatisfaction.com/mozilla_messaging/topics/thunderbird_very_slow_with_microsoft_security_essentials] [https://getsatisfaction.com/mozilla_messaging/topics/thunderbird_very_slow_on_one_system_and_fast_on_another] {{Bug|621083}} [https://bugzilla.mozilla.org/show_bug.cgi?id=839908#c7 Bug 839908]
+*Microsoft Security Essentials aka MSE (Settings | Excluded Files &amp; Folders | add [https://support.mozillamessaging.com/en-US/kb/profiles#w_where-is-my-profile-stored your profile folder], typically c:\users\-your-user-name-\appdata\roaming\thunderbird **) [http://getsatisfaction.com/mozilla_messaging/topics/thunderbird_very_slow_with_microsoft_security_essentials?utm_content=reply_link&utm_medium=email&utm_source=reply_notification#reply_12390513] [https://getsatisfaction.com/mozilla_messaging/topics/thunderbird_slow-yvp58] [http://groups.google.com/group/mozilla.support.thunderbird/browse_thread/thread/93ab6d849bd87918] [http://groups.google.com/group/mozilla.support.thunderbird/browse_thread/thread/84767c1397f8d560/d2ec367b9d781522?lnk=raot] [https://getsatisfaction.com/mozilla_messaging/topics/thunderbird_very_slow_with_microsoft_security_essentials] [https://getsatisfaction.com/mozilla_messaging/topics/thunderbird_very_slow_on_one_system_and_fast_on_another] [https://support.mozilla.org/en-US/questions/1289514] {{Bug|621083}} [https://bugzilla.mozilla.org/show_bug.cgi?id=839908#c7 Bug 839908]
-* Microsoft Windows Defender [http://answers.microsoft.com/en-us/protect/wiki/protect_defender-protect_scanning/how-to-exclude-a-filefolder-from-windows-defender/f32ee18f-a012-4f02-8611-0737570e8eee how to exclude Thunderbird] User reports of slowness fixed by creating an exclusion for the Thunderbird profile folder.[https://bugzilla.mozilla.org/show_bug.cgi?id=1208116#c5], [https://support.mozilla.org/en-US/questions/1067704]
+* Microsoft Windows Defender aka "Antimalware Service Executable" (ASE) aka MsMpEng.exe -  [https://support.microsoft.com/en-us/windows/add-an-exclusion-to-windows-security-811816c0-4dfd-af4a-47e4-c301afe13b26#:~:text=Go%20to%20Start%20%3E%20Settings%20%3E%20Update,%2C%20file%20types%2C%20or%20process. create an exception to exclude] the [https://support.mozilla.org/en-US/kb/profiles-where-thunderbird-stores-user-data Thunderbird profile directory/folder]. User reports of slowness fixed by creating an exclusion for the Thunderbird profile folder. [https://support.mozilla.org/en-US/questions/1355808#answer-1461964], [https://bugzilla.mozilla.org/show_bug.cgi?id=1208116#c5], [https://support.mozilla.org/en-US/questions/1067704], [https://support.mozilla.org/en-US/questions/1152667], [https://support.mozilla.org/en-US/questions/1013191], [https://superuser.com/questions/1324436/system-slow-unresponsive-when-thunderbird-is-receiving-emails-with-windows-defen], [https://support.mozilla.org/en-US/questions/1285317], {{bug|1441918}} (Firefox), {{bug|1640725}}, [https://www.reddit.com/r/Thunderbird/comments/mbspvh/comment/ihbx4lb/?utm_source=reddit&utm_medium=web2x&context=3]
 *Panda Cloud Anti Virus Free v 2.  Installed but it interfered with sending emails. Thunderbird v 24.3.0 said it could not access the temp directory although the outgoing emails were there. Thus the mail was not sent. No apparent tweaks worked.  When Panda uninstalled, Thunderbird was back to normal.
 *pctools internet security 2011 {{bug|610106}}
+*Reason Core Security causes error "...unable to open the temporary file...." https://support.mozilla.org/en-US/questions/1159964
 *Secunia PSI [http://gsfn.us/t/oqje] (User Contributed Notes)
 ** as of January 11, 2012,by default Secunia PS 2.0 forces an update to English rather than localized Thunderbird ; '''WORKAROUND from secunia''': "To change this, the user can double-click the program entry in the Scan Results and then choose the preferred language in the drop-down menu. We are aware that this approach may not be the most intuitive for our users and we are currently treating it as a bug. I have taken the freedom to quote your email to "bump up" our bug report and I have also raised the severity of the bug."
@@ Line 82: / Line 97: @@
 *THE SHIELD {{bug|542156}} (Bug report)
 *Symantec Norton Security Suite/NSS (offered through Comcast) *firewall* caused crash {{bug|598662}} (Bug report)
+*Vipre  If you are using the I use another email client option or the Spam Filtering option on VIPRE, please note that these do not support SSL or TLS (STARTTLS) connections.  This will prevent email from sending or receiving properly when Email Protection is enabled.  Disable the email scanning option in Vipre.[https://support.threattracksecurity.com/support/solutions/articles/1000124960-trouble-with-email-client-after-installing-vipre]  From the link Please note that if the ports for inbound or outbound emails is set to port 80 and VIPRE Internet Security is installed on the machine with the Web Filter enabled, email communication will be disrupted as the Web Filter scans all port 80 communication.
 *Virusbuster [[http://gsfn.us/t/pavl getsatisfaction report]]
 *Web Sweeper {{bug|534823}} (Bug report)
@@ Line 91: / Line 107: @@
 = Unaffected Antivrus Packages  =
-The following programs have generally been observed as working well with Thunderbird (but not proof that these products can't have problems):
+The following programs have generally been reported to work well with Thunderbird. (This is not proof that these products can't have problems)
 *AVG Antivirus - (revised) from [https://getsatisfaction.com/mozilla_messaging/topics/avg_email_scanner_disabled] "[AVG]  are no longer going to support the Thunderbird plugin because of the frequent updates of Thunderbird." And you may see problems with older versions (like 9.0.830). AVG may cause slow downloading of pop mail [http://gsfn.us/t/o1qa]. and AVG 9.0 may slow down sending with TB 3.1.x if set to scan outgoing messages) [http://forums.mozillazine.org/viewtopic.php?p=9663497#p9663497].
@@ Line 100: / Line 116: @@
 = Configuration Notes and Solutions for specific Anti Virus products =
 == AVG ==
-AVG can not scan SSL connections and requires you to set it up as a proxy and place the mail settings in AVG and pointers to the proxy in Thunderbird.  [http://www.avg.com/au-en/faq.num-5224 AVG offers instructions here]
+Feb 2019: AVG preventing Thunderbird from retrieving emails.  The status bar says connected and getting mail but no mail arrives or mail arrives and is marked as read.  AVG topic support [https://support.avg.com/answers?id=9060N000000LmdfQAC here]
+AVG can not scan SSL connections and requires you to include it's certificates into the Thunderbird certificate store.  [https://support.avg.com/SupportArticleView?l=en&urlName=Troubleshoot-AVG-invalid-email-certificate&q=thunderbird&supportType=home AVG reference here]
+If you use AVG secure VPN you need to set up your mail client.  See [https://support.avg.com/SupportArticleView?l=en&urlName=Troubleshoot-Secure-VPN-email&q=thunderbird&supportType=home here]  It is important to not that specifying an IP address removes flexibility from your mail connection and may cause issues if the provider changes the Internet Protocol (IP) address used for the server.  Normally Domain Name Services shield us from such changes by looking up the IP address on the fly.
 AVG causes intermittent Not Responding in Windows 10.[https://support.mozilla.org/en-US/questions/1114834]
+AVG causes unable to connect to server/gmail [https://support.mozilla.org/en-US/questions/1173080#answer-1001691]
 == McAfee ==
-McAfee has had major problems with Thunderbird over the years, causing crashes and poor performance, "Not Responding", "Unresponsive Script", and other issues.  <small>(For example [http://forums.mozillazine.org/viewtopic.php?p=13985921#p13985921], [http://forums.mozillazine.org/viewtopic.php?p=14013179#p14013179], [http://forums.mozillazine.org/viewtopic.php?p=13495577#p13495577], [http://forums.mozillazine.org/viewtopic.php?p=12678533#p12678533], [http://forums.mozillazine.org/viewtopic.php?p=13483493#p13483493], [http://forums.mozillazine.org/viewtopic.php?p=13127165#p13127165], [http://forums.mozillazine.org/viewtopic.php?p=13846427#p13846427], [http://forums.mozillazine.org/viewtopic.php?p=13482389#p13482389 (in 2013)], [https://support.mozilla.org/en-US/questions/1021448#answer-649815],
+McAfee has had major problems with Thunderbird over the years, causing crashes and poor performance, "Not Responding", "Unresponsive Script", and other issues.  <small>(For example
+[https://support.mozilla.org/en-US/questions/1434668 2023 Thunderbird gets stuck and I need to reboot SOLVED caused by McAfee][http://forums.mozillazine.org/viewtopic.php?p=13985921#p13985921], [http://forums.mozillazine.org/viewtopic.php?p=14013179#p14013179], [http://forums.mozillazine.org/viewtopic.php?p=13495577#p13495577], [http://forums.mozillazine.org/viewtopic.php?p=12678533#p12678533], [http://forums.mozillazine.org/viewtopic.php?p=13483493#p13483493], [http://forums.mozillazine.org/viewtopic.php?p=13127165#p13127165], [http://forums.mozillazine.org/viewtopic.php?p=13846427#p13846427], [http://forums.mozillazine.org/viewtopic.php?p=13482389#p13482389 (in 2013)], [https://support.mozilla.org/en-US/questions/1021448#answer-649815],
 [https://support.mozilla.org/en-US/questions/999657],
 [https://support.mozilla.org/en-US/questions/1041740],
@@ Line 118: / Line 141: @@
 [https://support.mozilla.org/en-US/questions/1051488],
 [https://support.mozilla.org/en-US/questions/1054542],
-[https://support.mozilla.org/en-US/questions/1067851], {{bug|592303}}.)</small>
+[https://support.mozilla.org/en-US/questions/1067851],
-[https://support.mozilla.org/en-US/questions/1069597]
+[https://support.mozilla.org/en-US/questions/1069597], {{bug|592303}}, {{bug|1858380}}.)</small>
 We recommend you do all of the following:
@@ Line 136: / Line 159: @@
 If you are uncertain that McAfee is the cause, you can test whether something started during Thunderbird or Windows startup is involved:
 * Start MS-Windows in safe mode
-* With Windows in safe mode, start [https://support.mozilla.org/en-US/kb/safe-mode|Thunderbird in safe mode].
+* With Windows in safe mode, start [https://support.mozilla.org/en-US/kb/troubleshoot-mode-thunderbird Thunderbird in Troubleshoot Mode].
 If the problem is gone then you must dig to find which Windows installed program or Thunderbird addon is causing the problem.
@@ Line 169: / Line 192: @@
 == AVAST  ==
+[https://support.avast.com/en-gb/article/Use-Antivirus-blocked-allowed-apps/#pc Avast blocked and allowed apps]
+=== Most recent reports ===
+* [https://support.mozilla.org/en-US/questions/1429446 Avast Mail Shield]
+* August 2022 multiple reports of [https://bugzilla.mozilla.org/show_bug.cgi?id=1783559 "bare feed line characters" error trying to send email]
+* [https://www.reddit.com/r/Thunderbird/comments/qkounq/comment/hixvztk/?utm_source=reddit&utm_medium=web2x&context=3 TB 91 super slow]
 === Slowness and errors with nsemail.HTML ===
 The release of Avast 10.3.2223 ( We think it is that version) has resulted in issues with avasts preventing Thunderbird from functioning correctly.  The workaround appears to be to create an exception in avast for the file nsemail.html in your computers temp folder. I have to say "appears to be" as Avast have not yet replied to my email. [https://forum.avast.com/index.php?topic=174203.msg1237332#msg1237332], [https://forum.avast.com/index.php?topic=174392.msg1238419#msg1238419], [https://forum.avast.com/index.php?topic=78428.msg1236530#msg1236530], [https://forum.avast.com/index.php?topic=174153.msg1237802#msg1237802], [https://forum.avast.com/index.php?topic=174153.msg1237802#msg1237802], [https://forum.avast.com/index.php?topic=174140.msg1237521#msg1237521] SUMO links [https://support.mozilla.org/en-US/questions/1068609], [https://support.mozilla.org/en-US/questions/1075713]
@@ Line 205: / Line 235: @@
 "Yeah, OK, so I uninstalled Avast, restarted the computer, launched TB and voila. Images are now loading when I click "Show Remote Content". "
 </blockquote>
+=== AVAST blocks getting email ===
+* [https://support.mozilla.org/en-US/questions/1272646#answer-1268192 cannot receive email after Mac Mojave update]
 == Bullguard  ==
@@ Line 221: / Line 254: @@
 Norton's products have a number of exceptions, but SONAR is the one usually refered to. There are suggestions that you create a exception for Thunderbird to fix slowness.  The Norton support forum has instructions [http://community.norton.com/en/comment/5651413#comment-5651413 here]
+Norton Security Deluxe is reported to cause issues with the Language reverting to English. [https://support.mozilla.org/t5/Thunderbird/Default-language-reseting-to-english/m-p/1382555#M146673]
 = The&nbsp;Global Search &amp; Indexer  =
@@ Line 257: / Line 292: @@
 ## Click Install and let the installation run.
 ## When you next open Thunderbird SPAMfighter will be back again
 = Helpful Links  =
-*[https://support.mayfirst.org/ticket/1660 http://support.mayfirst.org/ticket/1660] (Discussion about Thunderbird performance)
 *[http://forums.mozillazine.org/viewtopic.php?t=166608 AntiVirus Program causing Thunderbird Lag (mozillazine.org)]
 *[http://kb.mozillazine.org/Antivirus_software#Compatible_antivirus_programs General notes about AV Software and Thunderbird (mozillazine.org)]