i.m.h.o.>>the absolute best oil for this purpose is air tool oil. very high detergent and designed for high speeds and lasts a long time and it seeps into the tight cracks of the bearing. its very clean too. the other oils mentioned might be too thick and actually put strain on the motor when the fa...

heres a shot in the dark...
try adding fresh x-crack to you repository list.
if you have ubuntu tweak installed you can easily do it there.
video drivers are a tough deal with linux sometimes and thats why i'm still hanging on to 10.10 (also,i despise unity)

long time lurker but just joined:) if your screen is dim-ish and yellowed, you are losing blue. try unplugging the display cable and plugging it back in. sometimes age, ect. screws up the colours and blue is usually first to show. hope i helped. i have 12 thinkpads so i'll be back from time to time ...