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I'm trying to upgrade ubuntu my ubuntu 13.04 to 13.10, but there is always this error:

Error during update A problem occurred during the update. This is usually some sort of network problem, please check your network connection and retry. W:Failed to fetch[distro]/partner/source/Sources 404 Not Found [IP: 80] , E:Some index files failed to download. They have been ignored, or old ones used instead.

It's not the internet connection problem. My internet works fine.... i have good connection.

Can someone help me with this problem? Thanx

share|improve this question[distro]/partner/source/Sources is not a valid source url. Did you follow the steps in how-to-safely-upgrade-from-an-older-ubuntu-version-to-a-newer-one? You need to delete or deactivate old ppa entrys in sources.list – mondjunge Oct 28 '13 at 13:18
Please Open a terminal (Alt+Ctrl+T) and add the outcome of "cat /etc/apt/sources.list" as an edit to your question. Thx. – mondjunge Oct 30 '13 at 14:40

you have to try with changing to some other server , in deed from best server option.

Open software sources application from dash, from there you can change your software server.

share|improve this answer
I tried to do that, but nothing has changed. The same error anyway – Krišus Oct 28 '13 at 13:54

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