There is a big possibility that they might be really busy dealing with lot of withdrawls and other requests.
Highly unlikely.
A bigger & much more likely possiblity is that they don't give a sh*t because they are scamming everyone.
Its bit funny how some of the big exchanges are having issues with their security breach at the start of this year.
Cryptopia, yobit, Bitebtc, etc.
Best thing is to keep your coins out and for a loger term in your own wallets. it will be a different issue for daily traders.
Team BitBall