Computer typing by itself etc

[Lilly S]

I have run a Norton 360 computer virus scan several times which has picked up nothing. My computer sometimes seems to have a mind of its own. it starts flicking back through pages in my documents or through internet pages i am looking at, starts typing in capitals by itself, opens up yahoo messenger and starts typing messages to rrr and as i type this my cursor keeps moving back through the text and is all over the place. have I got a virus?

 

[sturm]

Could just be a wacky keyboard. Try a different one.