I have a really simple stupid question. I have had the Snow Loepard upgrade disk sitting on my desk for weeks, was about to upgrade when a friend called and said the upgrade caused havoc with Adobe apps (CS4) on his MacBookPro. Crashes, etc. Took him a long time to deinstall. So I haven't upgraded, but I can find nothing anywhere about compatibility problems with Snow Leopard and CS4. I have the newest iMac with 3.06 cpu and 4 gigs of ram.

Any advice? Everywhere I read says the Snow Leopard upgrade is a winner.