Also check transaction history, sometimes it has red "failed" mark, in that case contact live support so they can send you coins back to your account.
@bering because network is overloaded? Doh! It has nothing to do with site or maintenance.
edit* You waited because fee was low, but this is issue here, right?
Is it solved already mate? I made a withdrawal few hours ago and it was processed instantly as usual. Indeed it was stuck on unconfirmed for few hours as the network is overloaded but at least they sent my btc as soon as I requested my withdrawal.