Apache stops to respond

[Cadey]

Hello

Since 2 weeks, Apache stops to respond from times to times, I have to restart it.
Here's the last lines of the /var/log/httpd/errol_log file, if any clue? Thanks

*** glibc detected *** /usr/sbin/httpd: free(): invalid pointer: 0x09c4b490 ***
[Mon Feb 11 19:06:38 2008] [warn] child process 19461 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 27395 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8737 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 21579 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 29475 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 19473 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 19474 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 21582 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8738 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 4784 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8739 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 5475 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8741 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8742 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8743 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 5573 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8748 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8749 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8750 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 5578 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8751 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8752 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8754 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8755 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 5586 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 5588 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8765 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8766 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8767 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8770 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8771 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8772 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8773 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8775 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8776 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8777 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8778 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8779 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8780 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8784 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 5628 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8785 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8786 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8787 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8788 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8789 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8790 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8791 still did not exit, sending a SIGTERM
...................................
[Mon Feb 11 19:06:38 2008] [warn] child process 8905 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8958 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8963 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8964 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8968 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8969 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 8973 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9034 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9038 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9040 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9042 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9044 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9074 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9083 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9084 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9093 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9094 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9493 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9494 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9496 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9497 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9501 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9502 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9505 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9506 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9507 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9508 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9511 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9512 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9513 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9514 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9515 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9516 still did not exit, sending a SIGTERM
[Mon Feb 11 19:06:38 2008] [warn] child process 9564 still did not exit, sending a SIGTERM
*** glibc detected *** /usr/sbin/httpd: free(): invalid pointer: 0x09c4b490 ***
*** glibc detected *** /usr/sbin/httpd: free(): invalid pointer: 0x09c4b490 ***
*** glibc detected *** /usr/sbin/httpd: free(): invalid pointer: 0x09c4b490 ***
*** glibc detected *** /usr/sbin/httpd: double free or corruption (!prev): 0x09c63aa8 ***
*** glibc detected *** /usr/sbin/httpd: double free or corruption (!prev): 0x09c63aa8 ***
[Mon Feb 11 19:15:31 2008] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
No worker file and no worker options in httpd.conf \nuse JkWorkerFile to set workers\n
[Mon Feb 11 19:15:31 2008] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Mon Feb 11 19:15:31 2008] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Mon Feb 11 19:15:32 2008] [notice] Digest: generating secret for digest authentication ...
[Mon Feb 11 19:15:32 2008] [notice] Digest: done
[Mon Feb 11 19:15:32 2008] [notice] LDAP: Built with OpenLDAP LDAP SDK
[Mon Feb 11 19:15:32 2008] [notice] LDAP: SSL support unavailable
No worker file and no worker options in httpd.conf \nuse JkWorkerFile to set workers\n
[Mon Feb 11 19:15:34 2008] [notice] mod_python: Creating 4 session mutexes based on 256 max processes and 0 max threads.
[Mon Feb 11 19:15:35 2008] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Mon Feb 11 19:15:35 2008] [warn] RSA server certificate CommonName (CN) `plesk' does NOT match server name!?
[Mon Feb 11 19:15:35 2008] [notice] Apache/2.0.54 (Fedora) configured -- resuming normal operations
[Mon Feb 11 19:15:36 2008] [notice] child pid 10793 exit signal Bus error (7)