Logic 6 Pro Daily Crash, Remedies for a daily crashing Mac? Options

[Lounger]

Hello - tried my luck on the other forums. G4 power mac 466mhz, 512 MB RAM running logic pro, stylus etc, blah,blah

I get excellent use out of Logic, hours at a time etc but EVERY time (after I've closed and saved all my work) I quit the application it freezes/crashes maybe 10 seconds later, before I can even think about shutting down. In fact I have to wait for it to freeze, press the restart button and wait for the computer to boot up again before I can shut down. This is really bad new for my equipment surely? It seems like the problem is guaranteed to happen if I have been using midi previously. I've also had message errors indicating an internal data loop - is this midi trouble too?

Someone help - please!!? Extensions conflict - maybe, I dont know??!!

LoUnGeR