I have looked everywhere to find an answer to this problem, and so far nothing has helped. I am currently on my aluminum iMac trying to connect to the iTunes store, software update, or check the weather from the dashboard, and nothing loads. When trying to connection to the iTunes store or software update I get the error message that the 'network connection was refused' and to check my internet connection. I am connected to the internet, I can browse the web, obviously post this problem, and get on AIM, everything works fine except for things that I need to connect to through apple. I have tried reinstalling mac os, unplugging the router and wireless, flushdns (like one unhelpful apple article suggested) but still it doesn't work. I can connect to and do everything I can't do here on my macbook, so it's my imac that is the problem - nothing else. Does anyone have an answer on how to fix this, or anything they suggest I try to do? Thanks in advanced.