Mt. Gox is probably going to pull the same stunt they did with USD and EUR. They'll allow some withdrawals, especially small-value ones, and then their shills and sockpuppets will be claiming everything is just fine. There will be lots of excuses for withdrawals not working.
Expect the following excuses:
* "You need to reverify".
* "You have exceeded your daily quota".
* "You have exceeded your monthly quota".
* "Our hot wallet needs to be refilled from an off-site wallet".
* "Your request is pending".
* "All of our customer service reps are busy".
* "The block chain is backed up".
* "We are experiencing a denial of service attack".
I have my BTC there from somewhere in the end of december. I wasn't able to withdraw bitcoins since then.