I think all the exchanges have been flooded with new users that they can't even handle it. I'm sure the backlog of emails is overwhelming.
Bullshit. The "backlog of emails" is not an excuse when my emails to them are market "urgent" and refer to BTC missing due to a crash in their software (same as Dmitri). They never respond, and have zero support. Do not use this site until they resolve these issues.
Cryptsy, btw, is a bit lagged on processing transactions (which
is something that is understandable due to rapid growth) but has excellent support.