Be afraid of turbo mode
Have been there and trashed my first sd filesystem.
Second day pi user here. I am now using a medium overclock and the recent raspian image (09.Feb.13).
I am on a 1980x1050 screen and removed icons and the background image. I think the new raspian image is a bit snappier as well. But I definitly improved responsiveness by changing to another mouse.
Ok, perhaps I have to adjust to slower response on menu select and button press. But I also have to adjust to absolute silence and 99% less power usage (down from 300 Watt to 3 Watt)
I use netsurf for browsing (tipp: change forum theme) and libre office is really usable as well.
Try medium overclock and the new raspian image with another mouse/keyboard if you got one around.