DO NOT WORRY, to all people who cannot withdraw their monies I will summarize:
See, I told you he is retarded.
Bitstamp. How an exchange should be run. 
See, I told you he is retarded.
Awww :3 You waited for that one, huh?
We'll talk again in about 24h. If they fix it rather quickly, like they did always so far, I'll eagerly await your return to this thread.
Didn't have to wait more than a few minutes. And they were shit before, they will remain shit. Nothing will change in 24hrs except for your delusions perhaps.
Ciao, bella. Off to ignore you go
For the less retarded part of the audience, here's the result of my test (as posted in the wall thread a second ago)...
re: Bitstamp withdrawal.
Might be some automatized safety thing, that wasn't exactly thought through very well?
Maybe something like: If IP address changes regularly, stop withdrawal. Something moronic like that.
Aaanyway...
Just bought 1 btc for testing purposes, and btc withdrawal works for me, as they always did. Arrived at my address a few minutes later.
NOTE: I'm not denying that some accounts have problems withdrawing, but at least we know that not all accounts are affected.