2 weird engine server crash

Hi.

I’ve done a lot to get rid of the problems with model precache and so on. But lately I’ve been getting some new problems:

Its running on a dedicated server(Windows 2003 sp3)

1st:

http://fastdl.atac.dk/other/weird_crash_gmod.PNG

2nd:

http://fastdl.atac.dk/other/weird_crash_gmod2.PNG

Does anyone know what it might be caused by?

/teddybear