Comment 3 for bug 472564

I'm sorry to hear Ubuntu One isn't working properly for you. In order to help better determine what the problem might be, can you answer the following questions:

1) Are you using NetworkManager?
2) Are you behind a proxy server?
3) Can you report back what the following steps report?
    Quit the Ubuntu One client
    Applications->Accessories->Terminal, then run:
    ubuntuone-client-applet

Thank you,

Joshua