Mozilla release version 2.0.12 of Firefox.
This release fixes a number of security and stability issues discovered in Firefox 2.0.0.11.

Fixed in Firefox 2.0.0.12

MFSA 2008-11 Web forgery overwrite with div overlay
MFSA 2008-10 URL token stealing via stylesheet redirect
MFSA 2008-09 Mishandling of locally-saved plain text files...

Few hours ago Microsoft released bulletins accordingly with patches, among others also for extreme critical vulnerabilities in Internet Explorer and Windows. It should be no wonder, that Microsoft releases updates if... If these vulnerabilities were not old and already exploited in the wild. Let's take a brief summary on these:

Bulletin MS07-069 issued on December 11, 2007
Internet Explorer from version 5.01 to version 7 is affected, successful exploitation requires user's interaction (visiting malicious website), results in remote code execution. Update patches four (4) different vulnerabilities.