Jules Bromley wrote: > The situation we seem to have here, and the reason this is causing so much > hoo-hah, is that Logic is not behaving like other applications have always > done, even Logic itself on OS9 and PC. Basically, there seems to be a > bottleneck within the coding of Logic, which means that no matter what > mega-fast drives you have to feed it with audio, it can't process what it > receives fast enough and coughs up IO errors. Amen. And even while I'm interested to see all the technical explanations here (admittedly I actually don't know much about all this), I can still run 128 tracks in 24bit (mono), with Logics internal CPU meter showing around less than 10% useage on my old 1GHz machine (which I'm not using anymore for music, so it's bloated with netstuff and the likes, not exactly what you'd call an optimized DAW computer), using the onboard Promise UDMA controller and an el Cheapo Maxtor UDMA 100 drive under LAW 5.5.1. FWIW, the Promise controller on this mainboard has allways been known to be a very nice one, but you'd expect the onboard controller on a G5 to be as good, won't you? Still, track performance is pretty much worse. And, as Jules pointed out, all this isn't even all that relevant. The most relevant point being that other applications simply don't suffer from the same symptoms but perform (partially way) better, using exactly the same system. - Sascha