Mozilla has just released Firefox 3.0.6. The new release fixes several issues found in the previous version.
Six new security flaws have been patched, including one which was rated as critical. Mozilla has also fixed several issues causing problems with the browsers stability.
A full list of changes can be found in the release notes.
The new version should be pushed out to existing users of Firefox 3 in the next few days, or alternativly can be downloded from the Firefox website.