As part of Mozilla Corporation’s ongoing stability and security update process, Thunderbird 2.0.0.14 is now available for Windows, Mac, and Linux as a free download from www.getthunderbird.com.
Due to the security fixes, we strongly recommend that all Thunderbird users upgrade to this latest release.
If you already have Thunderbird 2.0.0.x, you will receive an automated update notification within 24 to 48 hours. This update can also be applied manually by selecting “Check for Updates…” from the Help menu.
For a list of changes and more information, please review the Thunderbird 2.0.0.14 Release Notes.
Please note: If you’re still using Thunderbird 1.5.0.x, this version is no longer supported and contains known security vulnerabilities. Please upgrade to Thunderbird 2 by downloading Thunderbird 2.0.0.14 from www.getthunderbird.com.
source: mozilla.org
