Okay ... spoke too soon. I still have a peculiar problem.
Game boots to menu as per usual, but my mouse is rammed to the top of the screen. I 'CAN' move it down, but as soon as I touch the mouse it creeps rather quickly to the top of the screen. Very strange.
I can navigate the menus using the arrows, and I can adjust all the settings just fine that way.
If I go to the JOIN game, however, as soon as I try to navigate around with the arrows, the game crashes and closes with no error messages.
If I start my OWN game, it seems to work, but I am perpetually staring at the ceiling. If I pull down, I can look down momentarily, but it always creeps up to the ceiling again.
And I only moved about for about 20 seconds before quitting, but my FPS looks okay.
Any thoughts?