I'm having the same problem. I go to MY eBay and it shows I'm bidding on nothing, have won nothing, have lost nothing.

Also, if I do a search by seller and enter my ID it shows I currently have nothing for sale which couldn't be more false considering I have 39 items for auction this week, all ending later today. This is a surefire way to kill any last minute bids I might have gotten this afternoon if it's not fixed shortly.