Upgrading to a new operating system can be a bit scary. Not knowing whether or not your applications will be compatible with the new version… well, let’s not get carried away. At least it’s not Windows.
In any case, a few problems can arise with any OS overhaul. Yes, even on a Mac. Luckily a application compatibility list is available on WikiDot where you’ll most likely be able to get compatibility information on all your apps.
Check out the Mac OS X 10.6 Snow Leopard Compatibility List on WikiDot.