My Macbook Pro started to behave strangely tonight. When certain keys are pressed on the KB, iTunes, VLC, or Quicktime will scan backwards to the beginning of the song/movie and resume playing from there. It's incredibly irritating. I can't have an IM conversation or type without interrupting my music. I can't pinpoint which key is doing this. I don't have any shortcuts setup. I restored the KB shortcuts to default, and nothing in my Sizzling Keys (for iTunes) is this erratic. Any input might help. Thanks.