Hey everyone, my macbook has been acting very weird lately. i've been having problems with itunes and shutting the thing down. When i shut it down it will just sit on the shutdown screen forever, or until i hold down the power button. and the whole computer runs like garbage should i re install leopard cause my computer is obviously messed up? I used a virus program i found on the internet(i have used it before without problems) but i ran it the other day and it seems like thats what caused it. The program was called clam xav or something i deleted it....... If anyone knows how to help please i need it. I am really considering reinstalling leopard. Do you think this will fix the problem??