I'm having the same issue now that I've upgraded to Win 7. Didn't happens on same system with XP. Damn annoying. I get chomped by alligator because my toe is stuck on a rock, I get eaten by Komodo's because I can't get through a doorway, I get slashed by Tiger because I'm trapped by a fern. I can't enter buildings because a deck board is slightly higher than another, I fall from radio towers because I don't know how to step over debris. I look like adman jackrabbit hopping around. I'll bet it would be quite hilarious from a 3rd POV.