mate im not too sure about 4.5, im almost certain i had to download it for gamebooster the just recently. i also may think gamebooster could be doing this too because it only happened when i started using that but not even without it, it still does it. ill try a report target practice, cheers for the link and im running windows 7 home premium 64-bit(6.1) if that helps Edit: just checked and i have 4.5