I had the exact same problem and went to Auctioneer forum where one the developers helped and explain what happens.
Quote:
"QuickAuctions2 doesn't directly affect Auctioneer files, but there are a couple of known problems.
First if you cancel a lot of auctions and repost them, the cancelled auctions do not get removed from Auc-ScanData until you do an Auctioneer full scan - and one thing that people use QA2 for is to cancel lots of auctions.
Second there was a bug in Auctioneer's scanning engine which QA2 just happened to trigger - this could cause duplicate copies of Auctions in Auc-ScanData, though I'm not sure of the scale of that problem"
Solution is simple, run fast getall scans has often has you can and they will clean the duplicate entrances and remove the freeze during scans.
hope this helps