Wires don't work on Bitstamp.
I have a wire of 3k lost somewhere in the Internet.
They have a problem with his banking software. Should be fixed soon.
But, when one wanna trade there's no time to wait.
Reminds me of Gox excuse.. It would be more plausible their account might be under 'close scrutiny' by their bank/financial services with millions of funds in and out and potential fraudulent wire.
Disclosure: I have funds there.