Thunderbird 3.1.7 and 3.0.11 updates are now available

Thunderbird 3.1.7 and Thunderbird 3.0.11 updates are now available for 
Windows, Mac, and Linux for free download from www.GetThunderbird.com. 
These releases fix several problems with large email folders stored on 
the user's computer as well as several fixes to improve performance, 
stability and security.

Thunderbird 3.0.11 is the last security and stability update for 
Thunderbird 3.0.x. Thunderbird 3.0.x users will be prompted and 
encouraged to start using Thunderbird 3.1 starting early next year.

Thunderbird 3.1.7: http://getthunderbird.com/
Thunderbird 3.0.11: 
http://www.mozillamessaging.com/en-US/thunderbird/all-older.html

We strongly recommend that all Thunderbird users upgrade to these 
releases. If you already have Thunderbird 3.1 or 3.0, you will receive 
an automated update notification within 24 to 48 hours. You can also 
manually fetch this update by selecting "Check for Updates..." from the 
Help menu.

For a list of changes and more information, please review the 
Thunderbird release notes:

Thunderbird 3.1.7 release notes: 
http://www.mozillamessaging.com/en-US/thunderbird/3.1.7/releasenotes/
Thunderbird 3.0.11 release notes: 
http://www.mozillamessaging.com/en-US/thunderbird/3.0.11/releasenotes/