i've beenin having this problem since i got ratchet and clank and am startin to get angry because i'm getting COD4 soon.
but anyway the problem is that when ever i turn the PS3 on and sign in it starts signin me in straight away (no promblem there) then as so as i go on of my games i get an error message saying that there's a problem and i have been disconnected from the PLAYSTATION NETWORK. a small while after that message (which i tend to ignore because i'm not playing online) i get another error message saying i've been disconnected from the acces point.
i've been told that it's just that my PS3's just to far away from the router but i want some expert help.;

if anyone has any ideas then i'd be very grateful.