via youtube.com
Patentkrig. Microsoft vill inte att Apple ska få något multi-touch mus-patent.
http://www.appleinsider.com/articles/09/10/02/apple_plans_mighty_mouse_makeov…
http://www.appleinsider.com/articles/07/04/12/next_gen_apple_mouse_may_dump_s…
http://www.appleinsider.com/articles/07/07/05/apple_may_extend_multi_touch_to…