At install 11.04 software channel issue

[vitriol_32]

Wondering if anyone could help me. Currently running 10.10, and when I selected upgrade to 11.04 from upgrade manager it begins the process well enough, but during the setup of the software channels it progresses to a point, then stops and tells me that I may have a transient network issue, and that it could not authenticate the following packages:

libgssapi-krb5-2
libk5crypto3
libkrb5-3
libkrb5support0

All of which are MIT Kerberos runtime libraries apparently (not that Linux saavy, looked them up in the package manager). It tells me to try this again later, but I had the same issue preventing me from trying to drop the beta over the last week. I have tried this several times over the last week (for the beta) and several times today for the actual drop. Have no other network issues that I am aware of. Thoughts?

[Pumalite]

The Servers are busy. Wait a couple of days

[dino99]

from your sources.list: deselect all the non genuine natty repo, then clean/autoclean/autoremove the cache before updating again

note: servers are actually over charged, so patience or way a few days

[vitriol_32]

Was hoping it was that simple. Thanks!

[vitriol_32]

from your sources.list: deselect all the non genuine natty repo, then clean/autoclean/autoremove the cache before updating again

note: servers are actually over charged, so patience or way a few days

How would I go about de-selecting those? Where is the sources.list? And then c/a/a? Sorry to be a bother....

[vitriol_32]

Think I found it, but will wait a day or so then try to upgrade. Thanks!