What's New in Thunderbird 3.1.5
Thunderbird 3.1.5 fixes the following issues in Thunderbird 3.1.4:

• Several fixes to improve performance, stability and security, see the Security Advisory.
• Several fixes to improve the user interface and add-ons experience.

For a more detailed list of bug fixes, see the Rumbling Edge for a Thunderbird-focused list, or the complete list of changes in this version.

You may also be interested in the Thunderbird 3.1.4 release notes for a list of changes in the previous version. See the Thunderbird 3.1 release notes for a list of what is new in Thunderbird 3.1.

• Mozilla Thunderbird 3.1.5 [Windows]
• Mozilla Thunderbird 3.1.5 [Linux]
• Mozilla Thunderbird 3.1.5 [Mac OS X]
• Mozilla Thunderbird 3.1.5 Source

• Offizielle Internetpräsenz
• Was ist Freie Software?
• Release Notes
• Security Advisories for Thunderbird 3.1