I too have had trouble logging into my account for several days.
Tonight I finally got in and my coins were gone.
4.77 BTC
526 PPC
306 LTC
Also NMC and DVC
I haven't sorted out the NMC or DVC yet as there were buys and sells and withdrawals
back and forth.
But Several thousand dollars total.
If there is a programmer or someone who understands the blockchain this would be helpful.
I have copies of all the records.
I have sent a support ticket. But would really appreciate if someone who knows how
to track this down could help. I have the withdrawal addresses.
And am familiar with this site to track down the chain of events: http://blockexplorer.com/.
Whoever is doing this, is leaving a long trail.