Whenever i log in my friends server after i play away things go wrong. i start disconnecting and everything around me freezes in the game. suddenly i die. when i try to log back into the game the terrain doesnt load and i spawn in nothing. literally start falling and i cant log out and log back in the same thing happens. my friends arent experiencing any of this. this all started out of the blue. it gives me nad "internal error" message when it disconnects. whats wrong do i need to redownload minecraft? how can i fix this is something corrupted ?