Man - the G5 DP was the only Mac that drove me crazy. Every 4th or so start up would fail (blinking question mark) but by restarting again and again I'd eventually get it to start.
Finally turned out to be a motherboard issue which Apple replaced for free, even though it was out of warrenty. Then it started doing it again but now they were out of the motherboards. Apple offered me a new iMac but I really wanted a tower. Finally I sold it to a Mac repair guy to use for spare parts. Arghhh!
And yes - you're fire is one heck of a useful texture.