We are all deluding ourselves that we have made lots of money on bitcoin going up. I made the mistake of moving my coins to MtGox in case I wanted to sell some. Now that I don't, I moved them back to my local wallet. That was 4 days ago, they have disappeared from my MtGox account but aren't in my wallet, nor even on the block chain. The support tickets have gone unanswered. So not only can we not get fiat out, we can't even get BTC out. All these gains are imaginary if there is no way to use a gateway to actually withdraw in either currency..
How long ago did you send the coins? Have you checked blockchain?