Not a newbie using the product or GROUP but I won two of the same when I only setted up to win just one. Auction one ended Jan-22-13 19:55:57 PST & auction two Jan 22, 2013 19:55:33 PST. Too close for your servers too disable the 2nd snipe I supposed. Live n learn y'all.

"Your auctions within the same group have to be at least 40 seconds away from each other in order for the sniper to be able to cancel bids once your goal is met.

That means that if you have two auctions ending too close to each other then Myibidder may still win both of them even if you set 1 auction to win as your requirement."

Thank you very much for the quick reply, richie!
Hopefully I will have a sympathetic seller to deal with.

Seems like you found the answer faster than I got my hands on it.
Yes, there is such requirement as you described.

I hope you can deal with the seller (the seller can always make a second chance offer to sell the item to the second bidder).