PHP / mod_perl segfault backtrace

This backtrace occurs when the php module is loaded along with mod_perl. the system is: rh 6.1 p3-600 256mb ram <BT> rogram received signal SIGSEGV, Segmentation fault. 0x40214641 in php_if_virtual (ht=140520468, return_value=0x0, this_ptr=0x0, return_value_used=1075922888) at php_apache.c:332 332 RETURN_TRUE; (gdb) bt #0 0x40214641 in php_if_virtual (ht=140520468, return_value=0x0, this_ptr=0x0, return_value_used=1075922888) at php_apache.c:332 #1 0x402c7c4c in __DTOR_END__ () from /home/apache/libexec/libphp4.so #2 0x402147e4 in php_if_apache_lookup_uri (ht=140520468, return_value=0x1, this_ptr=0x1f4, return_value_used=23) at php_apache.c:376 #3 0x80989f3 in ap_invoke_handler () #4 0x80ac009 in process_request_internal () #5 0x80ac06c in ap_process_request () #6 0x80a390e in child_main () #7 0x80a3a9c in make_child () #8 0x80a3bf9 in startup_children () #9 0x80a4226 in standalone_main () #10 0x80a49b3 in main () #11 0x400d31eb in __libc_start_main (main=0x80a466c <main>, argc=4, argv=0xbffffd04, init=0x80628d0 <_init>, fini=0x8150a4c <_fini>, rtld_fini=0x4000a610 <_dl_fini>, stack_end=0xbffffcfc) at ../sysdeps/generic/libc-start.c:90 </BT> any help would be appreciated...