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(See also Add mouse functionality to solve problems with multiple buttons)
On some applications and in web browsers the mouse scroll speed may occasionally slow down considerably. This can be solved in the following manner:
1. Install imwheel using Synaptic or the command line.
2. Open up the config file:
3. Paste these default settings into the file:-
".*" None, Up, Button4, 3 None, Down, Button5, 3 Control_L, Up, Control_L|Button4 Control_L, Down, Control_L|Button5 Shift_L, Up, Shift_L|Button4 Shift_L, Down, Shift_L|Button5
4. Restart imwheel with
5. Add last imwheel -kill command to Application autostart in Session and Startup so the mouse scroll speed works on start up.