HP Deskjet 6540 / Firefox Printing Log Files - How to disable?

My printer appears to be creating weird log files when having anything printed from Firefox. I'm not sure if it's JUST from printing from Firefox or not as I have yet to test this from something like IE or Word, etc. What I do know is that I want to disable this and I have no idea as to what I need to do.

The name of the log file is "hpfr6500.log" and I've tried searching through the registry for this name to no avail. All HiJackTHIS! scans show up OK and disabling all necessary peripheral applications appended to the primary spool executable does nothing. I fear this has something to do with some sort of odd-ball built-in service or code that HP is responsible for doing, but if any of you might have an idea as to what I should do, please let me know. This is really annoying.

P.S. - I know I could just "ignore it", but I would rather obsessively attempt to FIX the problem, instead.