Lately, Skype has been acting strange. It takes up 25-30% of the CPU usage, takes up an anomalously high 300 MB of RAM, and is constantly thrashing my hard drive... all for no apparent reason. I know it's Skype thrashing my hard drive because when I shut Skype down it all stops (and I have to forcibly process-kill it to shut it off, simply commanding it to quit via menu doesn't work). Does anyone have any insight on what it's doing?