Kaspersky currently expect to release an update to their software in November or December 2010 to fix this issue. If you are using the Kaspersky Anti-Spam Extension from Kaspersky Internet Suite 2011, issues within the Kaspersky Software may cause it to be broken with this update.If you are using the Kaspersky Anti-Spam Extension from Kaspersky Internet Suite 2010, it is disabled in Thunderbird 3.1 ( Bug 533692).The keyboard shortcut for 'Mark All Read' has changed from Ctrl+Shift+C to Shift+C.Mozilla Messaging does not recommend enabling plugins due to possible security issues. Plugins will no longer show in add-on manager as they have now been globally disabled due to performance issues.

Smart Folders has been renamed to Unified Folders and can now be edited.

You can still Save As Template from the email Compose window or drag the message into the Template folder.

In some cases, using 'Save As Template' from the File menu may not work.

If you are unable to view content for your RSS feeds in the Wide View Layout, you may need to disable the Lightning Calendar add-on if you have it installed or switch to Classic View and restart Thunderbird.

This should only be done if the error is understood. Thunderbird should permanently make an exception for the cert.

If using SSL or TLS, and the certificate thatĬomes from the server is self-signed, expired, or has a domain thatĭoes not match the server domain, a dialog will be shown asking if.

Thunderbird 3.1 requires that extensions either come from a secure server using the HTTPS protocol or are digitally signed, or they will fail to install.

You can install this add-on using the Migration Assistant. There is an add-on that offers similar functionality.

The compact header view was removed in Thunderbird 3 ( Bug 480623) see this blog entry for details.

You can also install this add-on using the Migration Assistant. There is an add-on that restores this functionality.

Extended columns in the folder pane were.

If you go back to using Thunderbird 2, or switch back and forth between Thunderbird 3.1 and Thunderbird 2, your password lists do not get updated.

Your passwords are stored in a new location.

This list covers some of the known problems with Thunderbird 3.1.

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