On my account on my wife's laptop, the touch pad has started to control the cursor keys instead of the mouse pointer.
It works fine on my wife's account or on the main user selection screen. On my account it controls the mouse pointer at first, but when Windows has fully loaded it starts to control the arrow keys instead.
I have not found anyone else with this problem during my research, and I have also tried setting the options for the touch pad to default in mouse settings and rebooting to no avail.
I've also tried disabling all Start-up programs - no difference:
I've checked the F5 function key too and this just disables the touch pad totally. Plugging in a USB mouse works fine. Anyone seen such an odd problem like this before?