After switching from 12.04 to 14.04 I got intermeadiate problems with the Software Updater. The checking for update starts and then I got "Failed to download repository information Please check your Internet connection". No hints whats happen (I gues wrong or stopped repositories), no chance to click to details or any eroor messages. Under 12.04 it was possible to select details and see whats going wrong.

It is nice for unexpiernce user to see no error infos, but it doesn't help.

What can I do to see whats going wrong?