Dotdeb.org has released PHP 5.4.9 and PHP 5.3.19 packages for Debian GNU/Linux
On november 22nd 2012, the PHP group has released PHP 5.4.9 and PHP 5.3.19, that bring ~15 bug fixes. The corresponding packages are now available on Dotdeb for Debian 6.0 “Squeeze” on both amd64 and i386 architectures.PHP 5.4.9 and PHP 5.3.19 for Debian
Please also note that Xcache (packaged as php5-xcache) has been upgraded to its 3.0.0 version.
As usual, please read the ChangeLog before upgrading and be sure to use to the latest packages before reporting any issue.