10. Runs slow on old computer
9. Illustrator crashes on save
8. Not used to new features
7. CS 6 comes out soon anyway
6. Required OS X 10.6 Snow Leopard upgrade
5. No font autoactivate plugin for InDesign
4. No more eyedropper plugin for InDesign
3. Feels mainstream
2. Ugly splash screen on startup
1. Other/Various