Do You Use QA, Auctioneer or Another Auction Addon?

If so, they will be broke come 4.0.1. As of right now, none of these addons have been modified in such a way to allow auction posting at all.

Blizzard modified the StartAuction() command so that it requires a hardware event. The QA author has said he has no plans of fixing the add on.

Good luck to everyone out there