[Solved - For Me - too] Re: hash sum mismatch when trying to upgrade

[Michael P. Varre]

>
> Found the problem; it's the '-d' on the end of do-release-upgrade! The
> -d instructs the upgrade manager to try and load the _development_
> versions; however, 8.04.1 is fully released so there is no development
> packages to fetch. So give this a try:
>
> sudo aptitude upgrade
> sudo aptitude dist-upgrade
> sudo aptitude install update-manager-core
> sudo do-release-upgrade
>
> and you should be good to go. Note: don't forget to do the 'sudo
> aptitude dist-upgrade'.
>
> I also found a related bug:
> https://bugs.launchpad.net/ubuntu/+source/update-manager-
> core/+bug/223741
> I'll put a note on there about the '-d' screwing things up & also a
> note
> to the upgrade page on the website.
>
> Gary
>

[Michael P. Varre]
HAH, it was really that simple! It works great now.

Ok, so I blame myself for not realizing the 8.04.1 was fully released, but man am I happy it at least happened to you at first.  Thanks for staying on top of this Gary!