The PHP development team has just released PHP 4.4.9.

It has improved security and stability and according to the team, it is the last PHP 4.4 release. Security enhancements and fixes include:

Updated PCRE to version 7.7.
Fixed overflow in memnstr().
Fixed crash in imageloadfont when an invalid font is given.
Fixed open_basedir handling issue in the curl extension.
Fixed mbstring.func_overload set in .htaccess becomes global.