Random Moments When Things Stop Working. HELP!
Sometimes while i'm playing the game things disappear, such as the map, aim helper, chat window, etc...
basically the interface. When that happens I can still move around and everything, but I can't shoot,call my vehicle, use my ego power, etc..and it interferes with me finishing my missions.

UPDATE! 4/7/13~
Okay, now the situation has gotten worse. When I call for my vehicle sometimes it doesn't even show up or it does, but once I get inside I can't drive it for some odd reason. I have to get out, re-call the vehicle multiple times before I can drive! Also, It keeps saying I have a new co-op map, but when I go to see the new map there isn't one.

Is it my system (PS3)? My internet connection? A glitch in the game maybe?
HELP!