I think I'm doing something wrong... The setup: ripping DVDs (from a hard-drive image) down to the "iPod hi-res" preset in Handbrake, except I'm choosing mpeg4 instead of h.264. 1-pass encoding, audio mixdown to stereo, and auto-crop. The observation: using the same settings, my old PC (800MHz P-III, 512 MB) encodes about 50% faster than my Powerbook 12-inch (1.33 GHz G4, 768 MB). What gives? Is Handbrake really optimized that much better for the Intel instruction sets (even on old chips)? On another note, when I have multiple videos in the queue on the PC, the encoding stops after each one, and I have to click an "OK" button for it to continue. The Mac version advances automatically.