I'm also having a problem with the mouse sensitivity.  I move the mouse a tiny amount and everything goes zooming by.  Even if I move the mouse what seems to be the smallest amount possible, the stuff on the screen moves so much that it's impossible to line up the cursor with the letters I'm trying to pick up (i.e. the tutorial stuff).

I was running the Windows version, and I'm using Windows 7 Professional.  I have the pointer speed (in my computer settings) set to the 6th out of 11 notches.  Setting the pointer speed to the slowest setting and restarting the game seemed to make it much worse, and setting it to the fastest setting and restarting seemed to make it a little better--I could, with extreme care, manage to line the cursor up with a letter and pick it up, but fine control was still impossible.

Is there a way to turn down mouse sensitivity (drastically)? I cannot play this game.