I've run into those same various conditions on running up2date at times. By the next day it is usually fine.

What I haven't been able to get around, very often, or perhaps just get lucky at times. Is that after a package is downloaded, before it will install, I get a web server 404 error thrown at me telling me the file, isn't available, which of course it is, because I just downloaded it. So I run the up2date again, select the package, it says the package has already been downloaded and installs it. It is a pain in the ass, but at least it works.

Erich