update NOT AUTHENTICATED warning

[Daniel Robitaille]

> >your packages should be properly authenticated even if they come from
> >universe, restricted or multiverse on Ubuntu mirrors that have a
> >correct setup.  I have seen the error before, but it resolved itself
> >soonish after (and also after an apt-get update)
>
> Do you know why this is?

no.  and since it usually resolves itself pretty quickly, it's tough
to figure out what the problem is, at least enough to file a bug
report.   My guess is that it occurs when a mirror is in the middle of
synchronizing itself with the main ubuntu.archive, X times every day.



--
Daniel Robitaille