I'm extremely happy with this mouse at my work, but there's was one thing that was really annoying: the scroll speed in Ubuntu Lucid (10.04 LTS) was just toooo fast. Scrolling one time at the wheel, created a scroll effect of several steps.
After Googling a while, I came up this link: https://answers.launchpad.net/ubuntu/+question/9200. This ticket says:
This has been driving me nuts for a while now. The scroll wheel on my desktop mouse (it's an MS wireless one) scrolls rather fast. Instead of moving a few lines, it scrolls half a page or more with a very gentle scroll. ... In Ubuntu (!) again I just unplugged the receiver and plugged it in again as fyo described (by reading fyo's explanations I thought I must do the plugging in Windows, so this is just for clarification). This solved the problem for me.
So unplugging the receiver did indeed solve the problem: crazy as hell :-). Interesting to know:
You see, the wheel is not a wheel at all (its not analog), in fact wheel movements are seen as button presses (its digital). If you open the X event monitor (from terminal just type xev) and you go with your pointer within the white window, you will see that at each movement of the wheel there is a button press/release event (depending on your xorg.conf, usually 4 and 5).