i have a logitech keyboard and it worked fine until 2 days ago at which point the o key only wouldn't always work..it would not type the o when pressed on so i hit it 2 or 3 times then it would repeat the o. so i thought my o key had died. got a new logitech keyboard (different model) and it's doing the same thing!!!!! is this a virus? no other key seems t d this!