I've installed Snow Leopard on my Mac Book Pro and to be frank I'm disappointed. It has some nice additions. Mainly on the tartiness of the interface front, but too many programs don't work. Quicksilver was broken, though an update seems to have fixed that. The printer driver for out hp2600n only works occasionally but worst of all is the misbehavior of CS4. Photoshop crashes 3 or 4 time an hour. Illustrator, which was rock solid, has started to crash.
Please, Adobe and Apple, these are my work horse tools, please get them fixed. Meanwhile I'm going to look up how to uninstall Snow Leopard. Pah.