Couple of readers wrote in to say that a new version of Thunderbird has been released.

Version 2.0.0.22 fixes couple of security vulnerabilities (with highest rating medium), so if you are using this e-mail client be sure to install the updates. The list of fixes can be seen at http://www.mozilla.org/security/known-vulnerabilities/thunderbird20.html#thunderbird2.0.0.22

Thanks to everyone writing in (too many to mention!).