Debian Configuration :: CUPS Raw Print Queues Not Working?

I am trying to set up a print server here on a Squeeze system using the stock debian CUPS package. It seems that since Apple has bought this package, it has caused me nothing but grief. I have set up two different USB printers with raw print queues, and every time I send a print job to either of them, the job disappears into thin air, with no error output. In fact, when I look at the queue, it says the job was completed successfully. I look at the logs, and there is no output indicating any issues. Just for kicks, I reconfigured one of the printers to use a linux driver, and it printed just fine (a little slow, but fine). I set it back to raw, and the jobs disappear again into oblivion.

I have done this many times in the past, and never had any issues -- I even had this very same printer set up that way about a year ago, and it worked great. The only noteworthy thing that seems to have changed is that there are no longer any files called "mime.types" and "mime.convs". It seems they have been replaced by "raw.types" and "raw.convs". The contents of these two files are as follows:

raw.types: application/octet-stream