segfault addcslashes 3.6.11 vs php 5.3.2/mysql 5.1.44
 

We're getting segfaulting in apache with this setup 3.6.11 and

Code:
# php -v
PHP 5.3.2 (cli) (built: Mar 6 2010 08:33:19)
Copyright (c) 1997-2010 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies
with Xdebug v2.0.5, Copyright (c) 2002-2008, by Derick Rethans
# mysql --version
mysql Ver 14.14 Distrib 5.1.44, for redhat-linux-gnu (x86_64) using readline 5.1
This started happening when I upgraded to FC12 (from FC10).

GDB say:
Code:
Core was generated by `/usr/sbin/httpd'.
Program terminated with signal 11, Segmentation fault.
#0 0x00007f6b97bcfd80 in php_addcslashes () from /etc/httpd/modules/libphp5.so
Am I running too advanced a base php/mysql or do I have some kind of misconfiguration?
Will upgrading to 3.8.5 help (long intended, but probably 2 days downtime)?