Hi there,
I never used to be able to get internet connection on my PS3 because our wireless router was too far away(whenever I used to try and connect it would be 'unable to obtain IP address'), so I paid a professional to move the router to a higher place in my house and that solved the problem. I connect to the internet wirelessly on my PS3 and i usually have quite a strong signal strength, however I went on holiday for 3 weeks and when I came back my PS3 would not connect to the internet and I could not sign in. It started doing what it used to do and was 'unable to obtain IP adress'. I have reset all my Network Settings and have also tried turning off the router. what can I do to overcome this problem with obtaining an IP address?