Okay, first let me say I'm a real novice, so please be patient. When I ctrl-alt-del, the task manager window opens, but when I hit the "tasklist" button, it closes immediately. I have run Spybot, Adaware, and Webroot Spysweeper, as well as Symantec antivirus. Any advice on what I can try? Oh - I'm on a networked PC at my office.