yep same thing is happening to me now randomly like every 20 mins playing Zombies on Black ops 2... I think the problem is on sonys end, it started happening a couple days ago and seems to be getting worse. nothing has changed on my end so it must be problems with psn
I love how everyone's suggested help comments are all about turning the router on and off. If it were a router problem PSN wouldn't connect in the first place and turning it on and off is not going to solve anything but refresh the IP tables on the router. Its a PSN problem if this many people are having the same issues.