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Since I installed 12.04 I have problems with updating. I get lots of messages of the following kind:

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

Somebody has an idea of what's wrong?

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It looks like that archive might not be responding, or its searching for something on that mirror that doesnt exist. A 404 error usually means that that mirror doesnt have a package list for you... – Thomas Ward Jun 12 '12 at 19:53

You can select an alternate mirror from the software center, under the "download from" menu.

enter image description here

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Thanks, it worked. I had already tried changing from the Main Server to the German Server, but had the same bad result. After your post I changed to the Luxembourg Server and it worked... – Antonio Jun 13 '12 at 14:15

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