Apparently something is wrong with the latest update from Kaspersky Anti-virus, because the last few days the CPU load on my server has skyrocketed to 80-100% load on average. This is caused by two worker processes from Kaspersky Anti-virus (kavfswp.exe) that take up 40-50% each. I've never had this problem before, and reinstalling the software temporarily fixes it, but as soon as it kicks in an update cycle for the anti-virus definitions, it starts all over again.
I'm not too happy with my server having high load. Aside from slowing down my websites, it also consumes more power and I don't know how happy the datacenter is with that. Technically I'm allowed to use 400mA for the server, but due to this nice CPU load bug It's been pumping 464mA. Some searching on Google only told me that in 2009 there was a similar problem. It was caused by an error in the anti-virus definitions and it was solved a week later when Kaspersky released new anti-virus definitions. I hope it's a similar issue, and that it will be fixed soon.
I could disable the anti-virus for the time being, but I don't know if that's such a good idea. Sure, I'm the only one that uploads files to it; but still... I don't like the idea of using an unprotected server. I've temporarily disabled videos till the problem is solved.
Update October 25th, 2010 - 12:19
It seems that I'm not the only one with this problem, judging by this thread on the Kaspersky support forums. Kaspersky promised to release an update that fixes the problem later on today.
Update October 25th, 2010 - 14:47
*phew* The update seems to have solved the problem.