Things that happen in my black ops someone has a solution?

on ps3, delete all your friends (this reduces lag), they cause the game to run slow, on the bottom of the screen it tells you what everyone is doing or has completed challenges (example) rabit-killer54 has got 500 head shots with the ak74u. also use an ethernet cable for better connection, but you will then need to perform an internet connection test to update it, or change it, and on the Multiplayer home screen, go to options and there is an option that says 'go to multiplayer when loaded' or 'load Multiplayer by default' or something like that, Hope this helps