Its happend to me as well sometimes when there is less than a minute to go, thats why i prefer opera for ebay. You can have one window open with the item to bid on and enable refresh every 1minute or every 15 seconds, and another with a higher bid just waiting for you to confirm it ,use the tile mode to get both windows alongside when it near to the end of item like in the last 1minute to 45 seconds confirm the bid in the second window . :-)
