Please excuse me for a very poor knowledge of my english language.
I recently reinstalled Kubuntu 13.04 X64 . recently I opened Muon (Center Application) and there was a warning that the image. Warning that the certificate is not valid and can not be verified.I am a long time user Ubuntu, but that he saw for the first time.
A disk image is an official, was downloaded from here http://cdimage.ubuntu.com/kubuntu/re...13.04/release/
The system software from the very Kubuntu repositories and Launchpad.
Moun and when he opened it there was a warning, was a short-term problem with the Internet. Maybe it's because of the problems with the Internet work?More warnings were not.
Should I worry about this? Or was it just what that bug?