The first thing you should install is apt-listbugs
apt-get install apt-listbugs
It warns you about know bugs for any package you install using apt.
If there\'s a problem with one of the mirrors try another...
# # Dapper # deb http://pt.archive.ubuntu.com/ubuntu/ dapper main universe multiverse restricted deb http://pt.archive.ubuntu.com/ubuntu/ dapper-security main universe restricted multiverse deb http://pt.archive.ubuntu.com/ubuntu/ dapper-updates main universe multiverse restricted deb http://pt.archive.ubuntu.com/ubuntu/ dapper-backports main universe restricted multiverse
# # Breezy # deb ftp://ftp.rnl.ist.utl.pt/ubuntu/ breezy main universe multiverse restricted deb ftp://ftp.rnl.ist.utl.pt/ubuntu/ breezy-security main universe restricted multiverse deb ftp://ftp.rnl.ist.utl.pt/ubuntu/ breezy-updates main universe multiverse restricted deb ftp://ftp.rnl.ist.utl.pt/ubuntu/ breezy-backports main universe restricted multiverse # # Dapper # deb ftp://ftp.rnl.ist.utl.pt/ubuntu/ dapper main universe multiverse restricted deb ftp://ftp.rnl.ist.utl.pt/ubuntu/ dapper-security main universe restricted multiverse deb ftp://ftp.rnl.ist.utl.pt/ubuntu/ dapper-updates main universe multiverse restricted deb ftp://ftp.rnl.ist.utl.pt/ubuntu/ dapper-backports main universe restricted multiverse
# # Breezy # deb http://mirror.ncc.up.pt/Ubuntu/ breezy main universe multiverse restricted deb http://mirror.ncc.up.pt/Ubuntu/ breezy-security main universe restricted multiverse deb http://mirror.ncc.up.pt/Ubuntu/ breezy-updates main universe multiverse restricted deb http://mirror.ncc.up.pt/Ubuntu/ breezy-backports main universe restricted multiverse # # Dapper # deb http://mirror.ncc.up.pt/Ubuntu/ dapper main universe multiverse restricted deb http://mirror.ncc.up.pt/Ubuntu/ dapper-security main universe restricted multiverse deb http://mirror.ncc.up.pt/Ubuntu/ dapper-updates main universe multiverse restricted deb http://mirror.ncc.up.pt/Ubuntu/ dapper-backports main universe restricted multiverse
# # Breezy # deb http://ftp.gil.di.uminho.pt/ubuntu breezy main universe multiverse restricted deb http://ftp.gil.di.uminho.pt/ubuntu breezy-security main universe restricted multiverse deb http://ftp.gil.di.uminho.pt/ubuntu breezy-updates main universe multiverse restricted deb http://ftp.gil.di.uminho.pt/ubuntu breezy-backports main universe restricted multiverse # # Dapper # deb http://ftp.gil.di.uminho.pt/ubuntu dapper main universe restricted multiverse deb http://ftp.gil.di.uminho.pt/ubuntu dapper-security main universe restricted multiverse deb http://ftp.gil.di.uminho.pt/ubuntu dapper-updates main universe restricted multiverse deb http://ftp.gil.di.uminho.pt/ubuntu dapper-backports main universe restricted multiverse
# # Breezy # deb http://darkstar.ist.utl.pt/ubuntu/archive/ breezy main universe restricted multiverse deb http://darkstar.ist.utl.pt/ubuntu/archive/ breezy-security main universe restricted multiverse deb http://darkstar.ist.utl.pt/ubuntu/archive/ breezy-updates main universe restricted multiverse deb http://darkstar.ist.utl.pt/ubuntu/archive/ breezy-backports main universe restricted multiverse # # Dapper # deb http://darkstar.ist.utl.pt/ubuntu/archive/ dapper main universe restricted multiverse deb http://darkstar.ist.utl.pt/ubuntu/archive/ dapper-security main universe restricted multiverse deb http://darkstar.ist.utl.pt/ubuntu/archive/ dapper-updates main universe restricted multiverse deb http://darkstar.ist.utl.pt/ubuntu/archive/ dapper-backports main universe restricted multiverse';