Nginx – php-fpm version 5.4 with nginx constantly restarting

I just upgraded my php version from 5.3.x to 5.4.x and since doing this – memory has dropped signifincantly! – however, I'm constantly getting these in my php5-fpm.log:

[18-Sep-2012 15:11:34] WARNING: [pool www] child 8981 exited on signal 11 (SIGSEGV - core dumped) after 65.813370 seconds from start
[18-Sep-2012 15:11:34] NOTICE: [pool www] child 8988 started
[18-Sep-2012 15:12:09] WARNING: [pool www] child 8988 exited on signal 11 (SIGSEGV - core dumped) after 35.185071 seconds from start
[18-Sep-2012 15:12:09] NOTICE: [pool www] child 8990 started
[18-Sep-2012 15:12:17] WARNING: [pool www] child 8990 exited on signal 11 (SIGSEGV - core dumped) after 8.277977 seconds from start
[18-Sep-2012 15:12:17] NOTICE: [pool www] child 8992 started
[18-Sep-2012 15:12:18] WARNING: [pool www] child 8982 exited on signal 11 (SIGSEGV - core dumped) after 109.550089 seconds from start
[18-Sep-2012 15:12:18] NOTICE: [pool www] child 8995 started
[18-Sep-2012 15:12:18] WARNING: [pool www] child 8985 exited on signal 11 (SIGSEGV - core dumped) after 109.668554 seconds from start
[18-Sep-2012 15:12:18] NOTICE: [pool www] child 8996 started

From what I can gather this is php silently dying? I'm running basic WordPress sites that keep popping up with 502 errors while php-fpm is constantly spinning up new processes.