Adobe has posted a "Known Issues" page for Snow Leopard- the site is here, but here's what they have right now:

Adobe Photoshop

(CS4, CS3) Performance slows when changing values with arrow keys in Photoshop CS4 (Mac OS X 10.6) (TechNote cpsid_51128)

(All Versions) Droplets no longer work in Photoshop after upgrading to Mac OS X 10.6 (Snow Leopard) (TechNote cpsid_51093)

(CS4, CS3) Blue halo in Expose around Photoshop windows is larger than in other windows (Mac OS X 10.6) (TechNote cpsid_51135)

(All Versions) Images don't open when dragged onto the Adobe program icon in the dock (Mac OS X 10.6) (TechNote cpsid_51230)

(CS4, CS3, CS2) Crash or program error occurs when using Menlo font in Photoshop and Premiere CS3 and CS4 (Mac OS X 10.6) (TechNote cpsid_51220)

(All Versions) When opening and saving, applications, including Adobe applications, may sporadically crash (Mac OS X 10.6) (TechNote cpsid_50654) 

Adobe Bridge

(CS4) Bridge CS4 crashes when navigating in Review mode (Mac OS X 10.6) (TechNote cpsid_51136)

(CS4, CS3) Videos do not play correctly in Bridge CS3 or CS4 Preview pane with QuickTime 7.6 or 10.0 (TechNote cpsid_51255)

For issues affecting other Adobe Creative Suite 3 applications in Mac OS X 10.6, please see Adobe Creative Suite 3 Known Issues with Mac OS X 10.6 (Snow Leopard) (TechNote cpsid_51215)