I'm using Apple hardware about a year, and this is a first time I see such an improper solution: Apple Wireless Mighty Mouse. Well, the initial idea was great, scrolling in every direction, controlling OS X functions etc. But the implementation is way too far from perfect:

- mouse hardly distinguishes left click from right click so you have to click VERY right to get it working;
- Scroll Ball simply stops functioning after ~1 month of heavy use.

I made several attempts to clean the Scroll Ball, unsuccessfully. I could go further and try to disassemble it, but instead just went to the store and bought Logitech V470. Little less functional, much more practical.