I had Norton Internet Security 2011 it ran out about two weeks ago then I installed AVG free while my new Norton 360 2013 got here in the mail. After I installed AVG I could not connect to wifi anymore. I could still use ethernet cable though. When my Norton 360 got here I uninstalled AVG and installed 360 but the problem continued. I have grown tired of switching the ethernet cable back and fourth between my PS3 and Laptop so I am hoping anyone could help kme out with this. I have done some searching and found that the firewall settings might have something to do with it. When I had AVG I diabled the firewall and was able to connect. But there would be no point in having Norton just to disable the firewall.