ok, after i upgraded my old card (8800gts) to my new card (gtx280) i sold the old card on ebay. i just got this email today from the buyer, (he has had the card for over a week now according to my tracking numbers , edit: was delivered on 12-11-08) i am 100% positive that this card was working just like it was when it was new before i shipped it. i made plenty sure that it was packed very well to prevent "usps" damage. what the heck are my options. i emailed this guy back asking for his total system specs to i could try to figure out if anything didnt add up. your thoughts? i need all the help i can get on this because i cannot afford to refund the money for a card that may have been overclocked and damaged that way.