not true, as you already know.
Could you elaborate, please? 1.42Ghz Mac Minis work perfectly well. Let's compare with Sams:
-1.42Ghz Mac Minis play videos faster
-1.42Ghz Mac Minis run Quake3 faster
-1.42Ghz Mac Minis run OWB faster
-1.42Ghz Mac Minis run Blender faster
Of course, Mac Minis could still be crap but:
1. Sams would be much worse
2. G4 Mac Minis aren't crap.