A follow on to this, there was an e-mail from BitFloor reportedly sent out to some accountholders, apparently those who had created API keys. Here's a link to that thread:

 - http://bitcointalk.org/index.php?topic=105079.msg1159003#msg1159003

As a last resort, I will be forced to fully shut BitFloor down and initiate account repayment using current available funds. I still have all of the logs for accounts, trades, transfers. I know exactly how much each user currently has in their account for both USD and BTC. No records were lost in this attack.