I've had plenty of issues with Flash on Linux. It doesn't typically take down the browser as it used to as plugins are (I think) now run in a separate process on Opera and Firefox. Konqueror can still crash because of Flash. That said, I'm not running the latest version of Flash on Linux because it doesn't even work in anything but Firefox (or presumably anything not Gecko-based).
As far as I can tell, Flash is very stable on Safari on the Mac, there are probably subtleties in the Flash code that cause occasional breakage on non-Webkit browsers.
The whole plugin situation is a travesty anyway. Adobe don't care about anything but IE and Firefox on Windows, so Flash runs like crap on everything else. I suspect Apple paid Adobe to get Flash working properly on Mac OS X + Safari.
As far as I can tell, Flash is very stable on Safari on the Mac, there are probably subtleties in the Flash code that cause occasional breakage on non-Webkit browsers.
The whole plugin situation is a travesty anyway. Adobe don't care about anything but IE and Firefox on Windows, so Flash runs like crap on everything else. I suspect Apple paid Adobe to get Flash working properly on Mac OS X + Safari.