I've just upgraded my 8gb 3G to OS 3.0 yesterday. Everything works well with no problem. Even the photo viewer is so much smoother and faster. But I faced the problem with App Store and YouTube. Let's talk about AppStore. first. When I click on them, the loading icon kept spinning and nothing came out. I waited for 5 mins, nothing, rebooted it twice, nothing. Did I miss out any steps? I can load apps using Pandora but when I click Buy, it will direct me to AppStore and again, it kept loading ... nothing happened. As for YouTube, it shows "Cannot connect to youtube". Anyone has this problem?!