even though my mouse is horrible half the time in paint :\
30flames3....
Re above, I use a laser mouse, and I found that it would "Stick" when I was drawing with it!
Hints...
Keep the bottom of your mouse very clean.(a Q-tip and water carefully works)
If you use a laser mouse, try laying down a piece of black construction paper (from a childs Coloured Construction paper book)
Make sure the paper is not shiny.
These should help with fluid movement.
~P'tuny