Some days, I can't win for losing.
Yesterday, a colleague who was doing a new installation of Fedora 8, came to ask me for help setting up his printing. Nothing else I was doing was working, so I thought, "Sure. At least I can do that. How hard can CUPS be?"
After struggling through SE Linux, adding an unsupported printer, and worked around the vagaries of naming and specifying URIs, I hand-hacked the PPD, and CUPS was finally willing to print a test page without complaint. We rushed to the printer in eager anticipation.
It was out of magenta toner.
The job's still sitting in the print queue, wating for its chance to create a paper jam.