Upgrading, failed to fetch files?

[starbase1]

I'm trying to upgrade everything on this computer to the release Lucid, and am getting errors retrieving some files, here's a sample of one of the errors, (the rest are very similar)

W: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/pool/main/b/base-files/base-files_5.0.0ubuntu18_amd64.deb
404 Not Found [IP: 91.189.88.31 80]

Anything I can try to fix this?

Nick

[kansasnoob]

Go to System > Administration > Software Sources and check some things.

#1) Under the Ubuntu Software tab be sure that the Cdrom option is NOT checked, also look at the choice of Server - you might consider changing to Main Server.

#2) Under the Other Software tab be sure that nothing other than the "Partner" repos are checked.

#3) When you click on Close be sure to click on Reload. If that returns errors go to step #4:

#4) Close Software Sources and open Synaptic. Click on Search and type "keyring" (w/o the quotes) and be sure that both "ubuntu-keyring" and "gnome-keyring" are installed, if not install them, then click on Relaod and see if you still get errors.

[starbase1]

Many thanks, I did the first three steps as you describe, and all the stuff is being installed as I type!