, E:Nogle indeksfiler kunne ikke hentes. De er blevet ignoreret eller de gamle bruges i stedet.
I used Google to find out what language this is.
It means: "Some index files failed to download. They have been ignored or old ones used".
I trying to upgrade to 14.4
What version of Ubuntu is installed now that your trying to upgrade to 14.04?
Looking at this link you should have more error messages that accompany with one you posted.
Something like: W: failed to fetch http: (rest of the line)
If your os in in Danish and your sources list is in Danish it will be very hard to assist you.