Excellent! This has definitely made my N9 a whole lot more responsive and therefore better to use.

And, although I don't know how (or if), it seems to have sorted a slight niggle (problem?) that I've always had from day one; swiping from the right side of the screen was somewhat hit-or-miss, it often took several attempts before it registered. I put this down to me being left-handed so using my thumb from right-to-left wasn't always successful. But now it works every time - sad git just been sat here for the last 5 minutes doing nothing but swipes just to be sure.

So thanks.

Now I'm off to get a life....