Yesterday I got a response:
Hi,
The billing system was under maintenance.
Sorry for inconvenience.
Best regards,
50BTC support team
but I still can't withdraw any coins.
Identical message received on Wednesday 05.28.14.
Unable to withdraw since Sunday 05.25.14.
Mined there before the "Big Hack" and since they re-opened without any issues and prompt payment.
Any issues were reasonably addressed and quickly responded via e-mail.
Payout issues occurred for me twice, which were resolved within 24 hrs.
These are MY experiences, nothing embellished, added or taken away.
Of course moved to another pool, which brings me to ask for suggestions. Right now at ghash.io (which in my opinion skim shares submitted) ...MY opinion...
What other "good" pools are there besides btc.guild and ghash.io. Ozcoin is history and slush's isn't a preference anymore either.
Meanwhile I cross my fingers that the payout system will be fixed and I'm able to get my measly 0.5btc ...