Exactly the same problem on a Gutsy.....
Not fixed by apt-get update....
W: Duplicate sources.list entry http://security.ubuntu.com gutsy-security/multiverse Packages (/var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_gutsy-security_multiverse_binary-i386_Packages)
Exactly the same problem on a Gutsy..... security. ubuntu. com gutsy-security/ multiverse Packages (/var/lib/ apt/lists/ security. ubuntu. com_ubuntu_ dists_gutsy- security_ multiverse_ binary- i386_Packages)
Not fixed by apt-get update....
W: Duplicate sources.list entry http://
i also have restricted drivers installed.
Thanks for your update....
PAtrick.