I have always been a scaredy-cat about upgrading my Mac OS. I guess it goes back to the old days when upgrading OS 8 would stop my computer in its tracks for days at a time. Anyway, I have two old, entry-level PPC computers -- a 1.2/256 RAM G4 iBook and a Mini with pretty much the exact same specs. The iBook seems to run Tiger not too terribly (I never use Dashboard), but I've always run Panther on the Mini. I'm finally ready to use the Tiger install disk the Mini came with so I can use Tiger-native programs, but I don't know whether to do a minimally invasive install or just wipe everything and start clean. What would you suggest to the glitch-prone upgrader?