Xymon reports excessive memory usage on 1 SLES 11 host

Hi,

I have a weird problem on one of my SLES 11 hosts:

Tue Dec 14 03:00:52 CET 2010 - Memory CRITICAL

Memory Used Total Percentage

[cid:image001.gif at 01CB9B73.C1882320] Physical 3803M 3829M 99%

[cid:image002.gif at 01CB9B73.C1882320] Actual 17592186044128M 3829M459445966156%

[cid:image001.gif at 01CB9B73.C1882320] Swap 0M 2055M 0%

•      as you can see, it reports an excessive memory usage, and hence turns red and does this 2 times each night. It's the 4.2.3 client compiled under SLES 11.

Any ideas?

Regards,

Carl Melgaard