on an important computer I use at work. I have changed mouse, thrown it against the wall a few times and nothing has helped including our so called computer tech person here at work. What can I do to fix this? I'm thinking someone downloaded something that's a nasty on the computer and it forces it to lock up. I can't get it any spyware or virus program to see because the mouse locks up! Sometimes it also seems that the computer locks up as well. Help!!!!!!