kdelibs4c2a:
  Installed: (none)
  Candidate: 4:3.5.1-2
  Version Table:
     4:3.5.1-2 0
        500 http://debian.yorku.ca unstable/main Packages
W: Couldn't stat source package list http://security.debian.org unstable/updates/main Packages (/var/lib/apt/lists/security.debian.org_dists_unstable_updates_main_binary-i386_Packages) - stat (2 No such file or directory)
W: Couldn't stat source package list ftp://ftp.nerim.net unstable/main Packages (/var/lib/apt/lists/ftp.nerim.net_debian-marillat_dists_unstable_main_binary-i386_Packages) - stat (2 No such file or directory)
W: Couldn't stat source package list http://security.debian.org unstable/updates/main Packages (/var/lib/apt/lists/security.debian.org_dists_unstable_updates_main_binary-i386_Packages) - stat (2 No such file or directory)
W: Couldn't stat source package list ftp://ftp.nerim.net unstable/main Packages (/var/lib/apt/lists/ftp.nerim.net_debian-marillat_dists_unstable_main_binary-i386_Packages) - stat (2 No such file or directory)