Traces d'exploitations dans les journaux

Serveur: Apache/1.3.23 (Unix)

dans les journaux apache
     /usr/local/apache/logs/error_logs :
     [12:29:52 2003] [notice] child pid 99999 exit signal Segmentation fault (11)
     [12:29:52 2003] [notice] child pid 99999 exit signal Segmentation fault (11)
     [12:29:52 2003] [notice] child pid 99999 exit signal Segmentation fault (11)
     [12:29:52 2003] [notice] child pid 99999 exit signal Segmentation fault (11)

dans /var/log/full-log :
12:30:38 Tatu /kernel: pid 99999 (httpd), uid 99999: exited on signal 11
12:30:38 Tatu /kernel: pid 99999 (httpd), uid 99999: exited on signal 11
12:30:38 Tatu /kernel: pid 99999 (httpd), uid 99999: exited on signal 11
12:30:38 Tatu /kernel: pid 99999 (httpd), uid 99999: exited on signal 11
12:30:38 Tatu /kernel: pid 99999 (httpd), uid 99999: exited on signal 11
12:30:38 Tatu /kernel: pid 99999 (httpd), uid 99999: exited on signal 11