I'm having issues with my ps3 getting internet connection when my main pc downstairs is on. It connects fine when it's off. It worked fine before when both machines are on but now i doesn't. It is a wireless connection and i have set up its own ip address. I have also disabled media connection and still no joy. I have had this problem before when my ps3 need an update but have checked and there are no new updates. Any help would be great.
They are both on the same IP address or in other words same channel. (aka one lane road comes to mind) try resetting you PS3 network settings, while your PC is on and useing the net. Should fix your problem.