it says failed to fetch http://some urls..
and E:Some index files failed to download,they have been ignored,or old ones used instead. what i am doing with that code "apt-get update"?
first you need to remove the Repository(URLS) that is not able to fetch from /etc/apt/sources.list
Then you run:
1:
aptitude clean
(cleans all .deb "package stock" in /var/cache/apt/archives)
(cleans all .deb "package stock" in /var/cache/apt/archives)
2
aptitude update
3
aptitude full-upgrade
Good luck!
Best regards
Daniel