PHP 5.3.5 and 5.2.17 Released!
This release resolves a critical issue, reported as PHP bug #53632, where conversions from string to double might cause the PHP interpreter to hang on systems using x87 FPU registers.
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. You can test whether your system is affected by running this script from command line.
All users of PHP are strongly advised to update to these versions immediately.