My league voted to quit MFL over their beta live auction a few seasons back. Do not confuse this with their slow auction, which I believe works well. If you need MFL's many other benefits, I strongly suggest running the auction elsewhere (yahoo, ESPN) and then moving the results over manually. We had massive problems two years in a row using MFLs live auction functionality, to the extent that people were close to giving up and quitting the league in the middle of the auction. In one of those years, a major fantasy player was awarded to two teams, and the issue was not uncovered until well into the auction. So we had to roll with two of the same player for an entire season. Many other problems resulted in numerous delays, restarts, undos, etc.
I really like what MFL does well but this league wasn't serious or complicated enough to warrant the cost when we could just hold our auction on ESPN and then host the league there for free. I use MFL for other non auction leagues and I put this league there to support what they do in the first place. Why they can't commit to fixing and streamlining their live auction room is a mystery to me, but unless they drop the beta disclaimer, I would stay away.