The GPG failures are because you haven't imported the public key for the archive (apparently the packman repository key). If you go to the packman repository website, they should have a keyfile there that you can use to import their public key (be sure to check the key fingerprint before trusting the key).
As far as the sound and video issues, it sounds like there may be a hardware issue, but it's difficult to tell for certain without examining the system.
As far as the original Ubuntu issues, I'd have to see the machine to determine what it's problem(s) are. If you bring it to the next installfest (this Saturday?), I or someone else there might be able to help.
==Joseph++
Dazed_75 wrote:
> Update: I started upgrading small numbers of packges at a time and have it
> down to 10 upgrades and 15 new packages according to smart. Nothing has
> fixed the sound and the video artifact is now in the upper left corner
> and/or the lower right. I have now seen it affect a window as well.
>
> It also seems the gpg failures are all coming from the packman repository.
> Some packages requiring gpg have been fine but I am not sure from which
> repository. I did not ctch on to the display tree feature until late.
>
> I would still love to hear frm anyone with help on the ubuntu issues
> mentioned in the 1st message.
>
>
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