The Mozilla Foundation rushed out a new version of Firefox on Tuesday to address stability problems introduced when it fixed a series of security vulnerabilities last week. Firefox Version 1.0.6 restore API compatibility for extensions and web applications that did not work in Firefox 1.0.5, a release itself designed to fix a variety of security vulnerabilities collectively rated as critical.

In a related move, Thunderbird 1.0.6 is now available for download. This latest version of the Mozilla Foundation's email client is designed to resolve extension problems that were accidentally introduced in Thunderbird 1.0.5. In particular, the popular Enigmail PGP add-on should now work correctly.

Credit the Mozilla Foundation for releasing stable versions quickly after discovering glitches but the need for further updates does illustrate the software reliability problems over security updates exist outside Redmond. ®

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