T420 TrackPoint Sensitivity keeps resetting with every boot up.

[balibone]

Hi guys, I'm using a Thinkpad T420 with Win7 64bit.
I've been having this problem for the past month or so.
Everytime I set the sensitivity of the TrackPoint in the UltraNav tab in Mouse Properties, it saves correctly but is forgotten once the computer restarts.
The sensitivity will go back to the default setting(slider will go back to the centre)
I have tried opening up the palmrest and reconnecting the connector to the motherboard. Still doesn't solve the problem. In fact I realised that before I tried this it only resets every 2-3 reboots but now it resets at EVERY reboot. Anyone has any ideas?