I'm having some trouble with my Play station3, it was working perfectly earlier and it let me sign in, play with friends on online video games, and two three hours later it wont let me sign in at all! It just says DNS error. DNS error over and over, I have un plugged the system, re started it multiple times and yet it still wont let me sign in, I asked my brother to sign into my account on his Play station3 and it lets him sign into mine using his, but not mine! I really hope my games system isn't broken.. Please urgently needing an answer!