Yet another PHP 5.2.xx release took place a few days ago, which brought us over 75 bug fixes, some security-related. If you are running any PHP 5.2.xx series release, make sure you apply this update. Full details on the PHP 5.2.11 release can be viewed at PHP.net. In addition, WHM/cPanel implemented this version of PHP in EasyApache, which updates smoothly. Now, if they would only get to implementing 5.3 already… =)
No 5.3 yet. Not all applications are compatible with it. I name Zend Optimizer and the Ioncube loader. We have to wait some weeks for them….