Mouse is not scrolling on Slackware 10.1

It is a very common problem. Edit the file /etc/X11/xorg.conf

Find the section where your input device is configured...
There are a lot of lines which are commented out with # but you should look for the following lines which should not be commented out
----------------------------------------------------------------------------------
Identifier "Mouse1"
Driver "mouse"
Option "Protocol" "PS/2"
Option "Device" "/dev/mouse"
// Most probably the above lines are there, now add the following line, always remember to add this line after Option "Device" "device/path"...
Option "ZAxixMapping" "4 5"
-------------------------------------------------------------------------------------------------------
Now it will start scrolling