Random Server Crash

My server is randomly crashing almost like test_workshop exploit. It’s not a DDoS, just a random crash. This is a picture of the console when it happened, I have also reviewed ulx logs and console logs and I see nothing that would cause it. My server host also does not seem to know what causing it. My server does not have wire and all of the addons and the gamemode is up to date.

What could be causing this?

[editline]24th November 2012[/editline]

Again…

Take a screenshot of the console log or window if you can so we can see the back end cause