click here to get the latest osx version of the wacom app. with my graphire2 the only changes i have noticed so far is that you can no longer hold and drag in contextual menus when launched with modifier button. now a single click opens the window and then you scroll. also the cursor seems to want to snap to outside of screen edge when ever it gets too near it. screensaver (and i presume sleep) have been restored when leaving the mouse on the pad.
Seems to work pretty well. Wacom finally shipped back my replacement pen, as mine was somewhat defective out of the box and only got worse with time, so now I can settle in and enjoy Painter for once.