Thunderbird 3.0.3 is now available for download

Thunderbird 3.0.3 is now available for Windows, Mac, and Linux for free 
download:

http://getthunderbird.com/

This release fixes an issue with mail folders for some users who updated 
to Thunderbird 3.0.2.

As part of Mozilla’s ongoing security and stability update process, we 
strongly recommend that all Thunderbird users upgrade to this release. 
If you already have Thunderbird 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 at:

http://www.mozillamessaging.com/thunderbird/3.0.3/releasenotes/