I got my 2012 Great American Beer Fest tickets today, and boy was it painful.
Last year, I signed in at 10:00 for the AHA members pre-sale and had my tickets by 10:05. I remember it being very straight-forward and easy.
This year, it appears there is no way to order all your tickets at once. For each session I wanted to attend I had to do a separate search, pick my tickets, and fill out the check-out information. I paid a "convenience" fee for each of the transactions.
That was bad enough, but when I went to actually place my order, there was a bug on the site that kept telling me to check the terms and conditions checkbox before I could place the order. I kept checking it and getting the same order. Eventually, I tried calling TicketMaster. Busy signal.