Bugfixes All Around
CMS Made Simple has released two updates recently, moving quickly from 1.6.1 to 1.6.2. WordPress released 2.8.1 awhile ago which fixed some larger bugs and a few security vulnerabilities, then just recently released 2.8.2 which fixes a XSS vulnerability. Finally, Joomla went quickly from 1.5.13 to 1.5.14 the first of which was a security release, and the second had a few more bugfixes.