This update has been posted on the site recently
2013-04-05: It appears the namecoin exchange has suffered corruption on the drive holding the exchange data which caused the crash. I've now got a disk image of the exchange and will be working on recovering the transaction data this weekend. Once this is done I'll post a status here of what effect this will have on trades that occurred between the last backup and the crash. Once a state of the database is determined and balances of coins in the exchange wallet are recovered I'll bring up the site for withdrawals only and the exchange will cease operation.