I have tried everything except restore my PS3, I play COD online and for some reason my PS3 will no longer connect to the internet wirleless or wired, my router is built in my modem so I do not have a seperate router. My computer is wireless and I have other devices that are connected also. They work fine. This is very frustrating because no one can seem to help and I would really love to get back online with my PS3.
I had this same problem and tried everything suggested. Nothing worked. By chance, I disconnected the router overnight and that solved the problem. Apparently you need to disconnect it for more than just a minute or two for it to reset.
(network settings - at the bottom "disable") & then i shut off my system, unpluged my eathernet cable from my system, unpluged the eathernet cable from the router/modem, unplug router/modem from wall & waited 3-5 min, plug power back into modem, then eathernet, then turn on your ps3, log into your account make shure its not trying to sighn in, then plug eathernet cable back into system & VOILA!
It works now & I hope it will work for you.
I had 80130182 as my error code and disconnected everything. Even the cable connection at the wall and let it all sit unplugged for 10 minutes. All came back fine.