Is it just me or did someone else recognize that too. I read for a while today. At first I had warm fingers, but it is realy cold in Germany at the moment. After a while my fingers started getting cold and I recognized that the touchscreen did not react the way it did before.
So I started rubbing my thumb so it gets warmer and voilá, the touchscreen works perfect again. Guess it does not like cold fingers. Well, on the other hand, who does?!