Hey! I'm having the same problem, i cant upload to facebook,bing, photosynth... I try wifi, 3g, edge... nothing works, only that network error (upload error). When i click retry, one file starts from 13%, other from 45% but keeps freezed there. My LiveID is working, my photosynth.net account too... I also have the latest version of the app, iOS 5.0.1, all of them original.