I have had this issue happen a few times before... I will be playing, then all of a sudden my player just stands in place. I keep my green connection to the game, and can chat fine, but I cannot move, jump, tumble, cast spells, switch items or anything. If I sit there, after about 5 minutes my connection goes red and disconnects. If I log back in, I can move around for about 30 seconds, but then the exact same thing happens again. Every time this issue comes up, it sticks around for at least six hours, and I'll just have to try logging in now and then throughout the day to see if my character is able to move.