httpd crashing but alive

hello

sometimes (like once a week) apache crashes and when I run "service httpd restart", it says it was not running and that was started
but it doesn't really start
(when I do "service httpd restart" again I get the same message)

the only way to start it is to do a "killall httpd" and then do "service httpd restart" (or just "start")

any ideas why this happens?!
the problem is that programs like SIM doesn't fix this issue... I need to login and do that

 

 

 

 

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