when I scroll my wheel mouse wheel for a web page (to scroll it up or down) I hear a squicky noise from my computer speakers; is this a known bug? It's not horribly loud but it is a bit anoying. It Doesn't happen for all programs, So far I found that it occurs with Internet Explorer and Outlook. It does not occur in Word or Mozilla. Has anyone else had this problem, is it a known bug and is there a way to fix this?