When refreshing the FTP directory periodically, three .dat files appeared.  I have downloaded them and removed them from the FTP server.  After starting up bitcoind with them I will report on any addresses they contain that have been seen in the block chain.  If they turn out to be your addresses, create a new wallet on a secure machine and spend all of your coins to one of its addresses ASAP.

EDIT: More keep popping up every so often.  I am downloading and deleting all that I find.