Using McFee Security centre on my PC. looking at Google websites, all of a sudden unable to page up, each time I tried sidebar to go up kept going to bottom of page, also the same on email inbox. I was unable to restart computer from Shut down as it wenyt to standby mode. Shut computer down by turning off power. When I restarted seemed to go to home page then email but egg timer wes still showing checked taskmanager and yahoo browser was still running. Seems Ok now any idea what this may have been?