i have an ati x300 card and vista home premium. it works fine besides this one glitch in media center. while watching tv shows live it randomly skips around video but not audio. like someone will be talking, the sound stays fine but the image of them moves through the frames forewards, then backwards, then forewards again and catches back up in about 15 seconds. on average this happens about 5 times per 30 minute show. i have googled and searched on the forums but not found anything relevent. i also have tried reinstalling the drivers AND vista THEN reinstalling xp, vista, and drivers and the exact same thing happens. wtf yo gimme some help!