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I'm running ubuntu 11.10 (oneiric) on this machine, and suddenly, apt is unable to update properly.

If I ask it to update its package information, by running apt-get update (or alternatively telling the update manager to "check"), it succeeds for about 120 packages (more precisely, I get about 120 Ign/Hit notes) and then says it cannot find universe Sources and restricted amd64:

Hit oneiric-backports/multiverse Translation-en
Hit oneiric-backports/restricted Translation-en
Hit oneiric-backports/universe Translation-en
Err oneiric/universe Sources
  404  Not Found [IP: 80]
Err oneiric/restricted amd64 Packages
  404  Not Found [IP: 80]
W: Failed to fetch  404  Not Found [IP: 80]

W: Failed to fetch  404  Not Found [IP: 80]

E: Some index files failed to download. They have been ignored, or old ones used instead.

I manually checked the de server and cannot find anything wrong with the stuff it's complaining about. Also it looks pretty much like, say, the us mirror.
But oddly enough, the IP it lists, seems to point to a debian package server, which obviously does not contain ubuntu packages.

So, how can I fix this?

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I believe that this should be reported to: or irc:// :) – medigeek Jul 12 '12 at 21:43
@medigeek: Thanks, I dropped the link in the irc room. – bitmask Jul 12 '12 at 21:54
up vote 1 down vote accepted

The problem seemed to be that there is something wrong with the de servers (persistently: look at how old the question is!). I changed all de entries in the /etc/apt/sources.list to the nl servers and it updates fine now.

It would appear, once you update from a different server, you can revert back to your local one. The nice ubuntu-mirrors people were unable to explain this, but it works.

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