Upgrading Kubuntu to version 11.04 failed.

[defaulter]

W:Fehlschlag beim Holen von http://security.ubuntu.com/ubuntu/dists/natty-security/Release Unable to find expected entry main./binary-i386/Packages in Meta-index file (malformed Release file?)
, W:Fehlschlag beim Holen von http://archive.ubuntu.com/ubuntu/dists/natty/Release Unable to find expected entry main./source/Sources in Meta-index file (malformed Release file?)
, W:Fehlschlag beim Holen von http://archive.ubuntu.com/ubuntu/dists/natty-updates/Release Unable to find expected entry main./binary-i386/Packages in Meta-index file (malformed Release file?)
, E:Einige Indexdateien konnten nicht heruntergeladen werden, sie wurden ignoriert oder alte an ihrer Stelle benutzt.

Above is the Information copy and paste out of the error-frame.

My internet connection shows no problem.

Appreciat your return note, Default

[Sam_ (and-sam)]

Thank you for the report.
OP runs 10.10 which is EOL. The appended question is in progress. Closing bug as invalid.
Please feel free to report any other bugs you may find.