Feb 15 10:09:07 lnx1 kernel: srcds_i486[31597]: segfault at 0000000001e71404 rip 00000000f54e0b2c rsp 00000000ffb8d15c error 4

When I start the server or if the server loads and I try to change the map on the server I get this error in /var/log/messages

I ran a memtest last night with no errors.

Has anyone ran into this problem before? If so how did you fix it?