I do not know for sure, but I think some mischievous hacker has infiltrated my pc. Last night when I was browsing the web, the pages kept on scrolling by themselves and it was very distracting. Then when I started watching videos I had on my hdd and they started resizing all by themselves. I had it on full screen then it went just a bit smaller at a time. Then right after that, it started fast forwarding by itself. After that I figured I was under attack and I immediately disconnected my ethernet cable. Magically enough, the trouble stopped completely for me for the rest of the night. So far I've run spyware and virus scans to no avail. I hope this was a once in a blue moon thing because that sucked. I've changed the password to my account in hopes that will help too. If anybody has some advice or other useful information on how to stop or minimize this crap from happening again, it's much appreciated.