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If Thunderbird safe mode helps then visit Tools | Add-ons | Extensions and determine which add-on might be causing the problem by disabling/enabling individual add-ons and. Start Thunderbird in Safe Mode (instructions).Are you using the newest update of Thunderbird? (do Help | About | Check for Updates, or visit ).give Thunderbird version number from Help | About, and last version where you did NOT have the problem.
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list account types (imap, pop, rss, etc) obtainable from Help | Troubleshooting.cite: step numbers below which help or fail bug numbers, support topic URL(s).precisely state when and where you see slowness or increased memory (startup, shutdown, or "normal operation"), and sequence of steps to reproduce your problem.use numbers - for example cpu percentage, amount of memory, number of folders and messages, etc.Rename or move files instead of deleting.ĭescribe your problem clearly but as briefly as possible in a support forum, newsgroup, or existing or new bug report: Do not delete files - they can be useful for future diagnosis.So please do not to skip steps like disabling of antivirus - all steps are essential to a full diagnosis. Some steps are *tests* which should be considered temporary, not a suggestion to forever disable a feature you need.All types of performance issues covered, memory, IO, and CPU, because often users see multiple symptoms. This document may seem technical, but it's not complicated taken a step at a time. If you are unable to find a cause on your own, please provide the detailed results of your investigation with this list in a support forum or bug report.
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And more than one cause is possible, so please use the full list below. To fix slowness, you must do some investigation. Slowness, for any reason, can be frustrating.
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