I have a song with NOTHING IN IT. No notes, no audio files, no plug ins, no synths even turned on. Nothing. I'm getting constant "system overload" messages most times (but not all) when i hit start. This comes and goes in phases. I am on Tiger with logic 7.1. It seems much worse (its unsuable now) than previous versions.
No non logic plug-ins, plenty of functioning RAM. 121MB free ram (in activity monitor). Page ins/outs 63000/1700.
Logic appears to take 20% CPU just to play an empty song. That seems abnormal. No other apps are running, no processes are doing much of anything at all.
Thanks to all in this thread for the usual disk/memory/set-up suggestions. In this case I think its obvious its nothing of that nature.