Also just upgraded BIOS from A9 to A10, Applied Video Updates 4YTM5 (Patch Panel update),92N0P (Nvidia A01),C9N91 (NVidia A02). Problem still seems to be occurring... so these don't seem to have made a difference.
Also noticed that the Clock / Date in the SysTray when in Desktop view seems to pop-up quite a lot hinting that a phantom touch seems to highlight the bottom right hand corner is a sensitive spot... (May just be coincidence!)
