I made a medium sized (~350 USD) withdrawal in the evening on 5 June. Approximately five hours later I made a smaller withdrawal (~150 USD) in the early hours of 6 June.
The smaller withdrawal went through just fine. The larger one is missing. I finally got a reply from mtgox last night, and they said that the withdrawal had been marked for retry. I have always been happy with mtgox service, and I expect they will resolve this issue to my satisfaction. That being said, I will not engage in any more trades there until this matter is closed.
There has not been a single report of resubmits going through.
They have told me my resubmits have gone through twice. I have seen neither, hit Dwolla. However, I did several transactions on tradehill.com yesterday evening and they have ALL him Dwolla already. I am so furious with Gox. I am taking my business elsewhere for good.