Ah, just noticed that MtGox customer support replied back to me, and I quote:
Mt.Gox Support, May 10 10:57 (JST):
Hello X,
Unfortunately, due to huge volumes of Dwolla withdrawals, we are unable to complete your withdrawal at the moment and it would take up to 6 business days for the transfer to be processed. Our apologies for the delay and inconvenience caused.
Thanks,
MtGox.com Team
I got the same answer also. They offered to cancel it if I wanted. I hope they get this worked out soon.