Hard to believe Apple wouldn't work with Adobe closely to make sure their CS product suite works with the OS before its release! You see kids, back in the day, Microsoft made sure the software of all their big software vendors where working with any new version of Windows before they released it: vendors got advance OS disks, and sometimes MS worked in close conjunction with them to make sure none of the API they depended on were broken.
I'm finding all these anecdotes leaving me a bit unimpressed. I installed Snow Leopard on my home machine on Saturday, and since then I have been through two 3~4 hour work sessions with Photoshop with no trouble. (To be fair my anecdote is no further proof of anything, I just thought I'd share for the sake of a more complete picture.)
This headline is sensationalist. There are some problems, obviously, but if it were really that bad, then there would be a whole bunch more. I upgraded from 10.5 and CS4, and have not run into a single issue. I tried everything that the users report in this thread as crashing Photoshop, and it's stable for me. Not one crash.<p>One user reported that on a clean install with CS4, everything went smoothly. That, to me, says some people have stuff running that is causing problems.<p>I had issues with system stability after the upgrade. Lot's of beachballing. Turned out to be a kernel extension that I was using in Leopard. Hardly surprising that a rogue kernel extension can make your system unstable. After removing it, SL has been rock solid.
It's hardly surprising that Adobe has problems with almost every OS upgrade, a perousal of <a href="http://adobegripes.tumblr.com/" rel="nofollow">http://adobegripes.tumblr.com/</a> will quickly show you what garbage software it is.
Adobe did testing across the CS4 line atop the new Apple OS. There are a few minor issues documented... see blogs.adobe.com or individual product support pages. Most people find it just works.<p>It's quite possible that someone has a minority experience, where it doesn't work. First steps are to check the integrity of the applications (it's legit CS4 direct from Adobe?), then any customizations to the system that may cause it to act differently than others. It's to everyone's advantages to document all meaningful Snow Leopard differences.
In the comment stream Jeffrey Tranberry (from Adobe) is saying a new font, Menlo, is causing at least one of the problems. How can a font cause a serious problem?<p>Also, following someone's Twitter stream for information is fail when it's a ton of @ messages.