PHP Fixes Critical Bug in 5.3 and 5.2
The PHP development team released updates to PHP 5.3 and 5.2 to close a critical bug.
"The problem is known to only affect x86 32-bit PHP processes, regardless of whether the system hosting PHP is 32-bit or 64-bit," the announcement said. "You can test whether your system is affected by running this script from the command line."
All users are strongly encouraged to upgrade as soon as possible.