Sometimes, running "sudo aptitude update" and trying the upgrade again
can fix authentication issues. Also, try restarting the machine...
that may help.

On 11/17/07, Marianne MacKenzie <tingasiki@ybb.ne.jp> wrote:
> I am trying to upgrade my system by installing the new distribution
> release 7.04. However I always get the error message :
> "Authenticating the upgrade failed. There may be a problem with the
> network or with the server. "
> What should I do?
> Thanks for any suggestions!
> Marianne MacKenzie
>
>
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