Well, that would be the escape key to get to the appropriate menu to change class; only way I can see teh Esc. key doing anything else @ that point would be if you've assigned some other function to it. The only way to know that would be to do what you can do yourself: Look through your game menus and see if you have the key assigned to do anything else...or maybe assigned by some simple script to a keybind of some sort...just put your keys back to default & start over...or have someone use teamviewer to fix it for you. (Not me0 =)
