I found the problem that made the server crash all the time!
Its a bad motherboard.
And I really, really hate the dedicated host server. I just hate every aspect of it. I don't know where to start but I just want to shoot myself in the face whenever I have to work with that thing.
So, I need a new motherboard. I probably won't get a new one until after Christmas. This means that the server will be returned to its full glory somewhere around that time.