Is there a log to diagnose consistent computer lockup?

[lowno]

I have a dell quad core system with the new vicibox server installed and for some reason overnight it just locks up. It has happened each night I have left it on. I don't think it is related to vicibox server, that is why I am posting this question in here.

Are there any logs that I can look at to maybe get an idea how to resolve the problem?

Thanks.

[Op3r]

can you give more specific symptoms of what is the so called lockup?