A very unsual problem but a very frustrating issue nonetheless.
DELL Latitude D500
It is the opposite of making the touchpad disabled while you are typing on the keys; to stop you from accidentally moving the cursor or pressing the touchpad's mouse buttons.
The only time i am able to move the touchpad's cursor or use the mouse keys is to press and hold any other keyboard key; the best key at the moment to use is the Fn key, other keys causes problems as i try and move the cursor.
I have tried to uninstall and reinstall other touchpad drivers but it appears in vain.
Currently I am using Alps Pointing device version : 18.104.22.168
I have also looked extensively on the touch pads control properties but there is nothing to enable/disable this locking issue.
This surely must be a software fault but i cannot rule out a hardware fault.
Any help is appreciated and the solution finder will receive the 500 points!