HI everybody!
This can happen because of special charactersm in the name.
It's often a "." (point) in teh name that makes the game frezzing. It also happened to me my mouse acted like crazy!It began ointing at the ground or at the sky. Or even worse: I was stuck in the ground.
So check the player's name and see if it contains points or dashes or smthg like that.
Hope it heleped!
Cheers
M@C~Oner