Well, well. The nanojit may be less effective on G5, but we're getting excellent reports on G4. A user wrote in to report that to my surprise, the G4 really benefits from it -- which makes me wonder where it gets it so wrong on the G5. On my iBook, it cuts SunSpider execution time in half, and matches the G5! So shame on me for assuming the G5 with all its fancy out-of-order hardware would be the last word.