Core Dumped в PHP - как победить?

[Wed Dec 12 15:22:47 2012] [notice] child pid 18598 exit signal Segmentation fault (11)

 
# gdb php
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Reading symbols from /usr/local/bin/php...done.
(gdb) run b.php
Starting program: /usr/local/bin/php b.php
[Thread debugging using libthread_db enabled]
[New Thread 0x7fffeb976700 (LWP 19097)]
[Thread 0x7fffeb976700 (LWP 19097) exited]

Program received signal SIGSEGV, Segmentation fault.
zend_hash_exists (ht=0x31, arKey=0x13c1ed8 "empty", nKeyLength=6) at /usr/local/src/php-5.3.19/Zend/zend_hash.c:934
934             p = ht->arBuckets[nIndex];