Unclutter hides your X mouse cursor when you do not need it, to prevent
it from getting in the way. You have only to move the mouse to restore
the mouse cursor. Unclutter is very usefull in tiling wm's where you do
not need the mouse often.
Just run it from your .bash_profile like that:
unclutter -idle 1 &
svn path=/nixpkgs/trunk/; revision=31431
