I have a number of Mac's, all listed in my signature. Recently I've been playin with my Power Macintosh 8600 and find MAC OS 9 to be a horrible thing with random crashes just because I requested an application to do something minor. Boom. I need to restart the whole computer. (Mind you, after turning off virtual memory, I've noticed an increase in system stability) My main system is a 2011 MacBook Pro that came with Snow Leapard, which is currently running Mavericks. It is infinitely more reliable than Mac OS 9, but it does hang from time to time, which seems ridiculous with a dual core i5 and 8GB ram. My most realible and steady system of all my computers, is oddly, my Power Mac G5 running Leopard. OSX on PPC is just insanely stable! It never hangs for at all, always responds and it actually FASTER than my MBP at doing basic tasks such as opening system preferences and opening programs. It has a geekbench score around 1/5 of the MBP and roughly 1/4 as much ram, and yet seems to be way more reliable. My music teacher at school has a ton of new sandy bridge workstations for recording music with Pro Tools, but when we have a live event on and he needs record a whole session on the fly, what does he use? His Power Mac G5 running 10.5.8. In 2014. He doesn't trust he modern windows workstations over the old trusty G5. Am I wrong here or is here something oddly stable about these machines and their software?