PHP Causes random segfault.

Hi everyone, I hope this On-topic here, if not bear with me. I have a production web server that seems randomly generate segfault. This is a small excerpt from apache error log file: [Fri Feb  6 09:25:05 2004] [notice] child pid 22388 exit signal Segmentation fault (11) [Fri Feb  6 09:31:50 2004] [notice] child pid 22398 exit signal Segmentation fault (11) [Fri Feb  6 09:32:03 2004] [notice] child pid 22413 exit signal Segmentation fault (11) [Fri Feb  6 09:32:04 2004] [notice] child pid 22417 exit signal Segmentation fault (11) Also php produces weird errors in it's error log file: [06-Feb-2004 08:33:24] PHP Warning:  main(HTTP_USER_AGENT): failed to open stream: No such file or directory in /home/web/web-www/modules/fsArticle header.php on line 5 [06-Feb-2004 08:33:24] PHP Fatal error:  main(): Failed opening required 'HTTP_USER_AGENT' (include_path='.:/usr/share/php') in /home/web/web-www modules/fsArticle/header.php on line 5 And I can garantee that we are not trying to include HTTP_USER_AGENT in our header files. It almost looks as if php is randomly writing to the wrong memory. System config: gcc 2.95.4 libc 2.3.2 Any ideas anyone?? Michael