Problem with HTTPD

Help I am still getting a lot of these in my qmail/squirrelmail server

9540 ? S 0:00 /usr/sbin/httpd
9565 ? S 0:05 /usr/sbin/httpd
9566 ? R 119:06 /usr/sbin/httpd ***
9568 ? S 0:21 /usr/sbin/httpd
9569 ? S 0:20 /usr/sbin/httpd
9572 ? S 0:24 /usr/sbin/httpd
16269 ? S 0:04 /usr/sbin/httpd
9747 ? S 0:11 /usr/sbin/httpd
10451 ? S 0:12 /usr/sbin/httpd
12469 ? S 0:08 /usr/sbin/httpd
14604 ? S 0:11 /usr/sbin/httpd
15069 ? S 0:11 /usr/sbin/httpd
15627 ? S 0:09 /usr/sbin/httpd
21553 ? S 0:09 /usr/sbin/httpd
21646 ? S 0:10 /usr/sbin/httpd

This R seems to be taking a huge chunk of my 4 CPUs.... Normally I do a cron job to restart the httpd , but just curious what cause this

 

 

 

 

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