It was just this past Tuesday that Mozilla released new versions of its Firefox browser and Thunderbird E-mail client. Now new versions, Firefox 3.6.15 and Thunderbird 3.1.9, have been released. These are apparently bug fix releases, to address a crash in Thunderbird, and a problem with Java applets in Firefox. Further information is in the Release Notes for Firefox and Thunderbird.
You can get the new version using the built-in update mechanism (Help / Check for Updates), or by visiting the download page for Firefox or Thunderbird.
Posted by Rich 