High memory usage until CRASH

We are constantly getting a server slowdown and seeing these two processes take up 7 Gigs of memory until the server becomes unresponsive:

999 16632 24.0 34.6 5544484 2830036 ? D 11:25 0:46 /usr/libexec/usermin/virtual-server-theme/left.cgi 999 16633 31.5 55.4 7605388 4528860 ? D 11:25 1:01 /usr/libexec/usermin/mailbox/index.cgi

Help!

Status: 
Closed (fixed)

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