Because we have been having this topic of newbie bidders and trying to establish how we want to self govern here I would say that because greenplastic was bidding over someone that can not provide a safety deposit to confirm his bids were official that either you move greenplastic's 0.75BTC to your minimum increment overtop of comit's bid (the actual last valid bid) or let him take the first bid and replace the problem bidder. (in this case it is the same bid)

Don't mean to derail auction but its going to mean that the auctioneer's need to nip these issues quicker.