I had the same problem on hp nx8220. The problem now seems to be solved via modifying xorg.conf. In the sever layout section I changed
InputDevice "TouchPad" "AlwaysCore" InputDevice "Mouse" "CorePointer"
to InputDevice "TouchPad" "CorePointer" InputDevice "Mouse"
On my machine this fixed the issue.
I had the same problem on hp nx8220. The problem now seems to be solved via modifying xorg.conf.
In the sever layout section I changed
InputDevice "TouchPad" "AlwaysCore"
InputDevice "Mouse" "CorePointer"
to
InputDevice "TouchPad" "CorePointer"
InputDevice "Mouse"
On my machine this fixed the issue.