For some reason over the last month or so, logic just stops playback as it is playing back for no reason. I thought I was overloading the cpu, but I increase the buffer size, use less tracks and it doesn't help. Normally I use a digidesign 003 through core audio, thought that might be the problem. So now I'm running it off of the built in audio card, with one track, and it still does it. Driving me Crazy! My cpu is a dual 2.0 power pc, about three years old. Kinda slow, but shouldn't do this with one track playing! Audio preferences are set to I/O buffer size 512, I/O Safety buffer is on. Universal Track Mode on. Process buffer range is Large, Rewire is playback mode, Normal Max scrub Speed and Scrub response.