my mx1000 works perfectly, love the extra buttons, makes navigating through windows and the web so much quicker, don't have to move the mouse around as much, the only thing I'd like to change about it is its weight.
I've only begun to notice the extra weight it carries after damaging my right wrist while windsurfing during the summer, I was supposed to go to physio but never went because I had to get back to university...stupid NHS won't transfer me to my hospital in London....gggrrr.
either way I've started doing exercise's by myself (every now and then) but even after a month, using the mouse for over 2-3hrs leaves my wrist aching. I'll admit though, before the injury, I never noticed the extra weight or thought it a possible problem.
[edit]no crude joke's about wrist injuries ;), believe me, I've heard them all...[/edit]
I'm thinking about swapping for the logitech G7 mouse, basically similar to the mx1000 but lighter and without as many buttons...not sure yet, I've been accustomed to 2 thumb buttons for nearly 4 years.
People of our generation should not be subjected to mornings.
Rbots