I have 18 auctions ending in 1-2 hours and mine are all gone as well.
I've been very patient with Auctiva over the past two years. After all, it is free. But when a situation like this happens, I stand to lose greatly. Most of my auctions are for collectibles, and I've a loyal following of bidders--many of whom wait until the last minute or so to bid. I've answered over a dozen emails so far this morning about the missing pictures.
Today, when these auctions end, I am cancelling my Auctiva service. The reliablity and dependability of this service is so incredibly frustrating at times, but I've always thought..."Hey, it IS a free service, after all." I'm estimating, based on previous sales, that I'll lose over $200 today because of this picture problem. I cannot recommend this service to anyone.