I had real problems with an early run Korg M1, with the infamous Eprom problem. The first PSR2000 I had also did some buggy OS things that it wasn't supposed to do. None of the other synths or arrangers I've owned has ever crashed.

It's very rare that my softsynth system ever crashes either these days, but there was some trial and error in getting to that point, mainly on finding out what doesn't play well with other things.

AJ