Everything is "new"

[Michael Holtermann]

Every time I update the package list in aptitude, it shows me 19877 new packages. A second update (letter "u"), and we have 39626 new packages. A third update don't increase the value.

$ lsb_release -rd
Description: Ubuntu 11.10
Release: 11.10

$ apt-cache policy aptitude (11-05 15:34)
aptitude:
  Installiert: 0.6.4-1ubuntu2
  Kandidat: 0.6.4-1ubuntu2
  Versionstabelle:
 *** 0.6.4-1ubuntu2 0
        500 http://de.archive.ubuntu.com/ubuntu/ oneiric/main amd64 Packages
        100 /var/lib/dpkg/status

[Michael Holtermann (linux-michael-holtermann)]

As a workaround, I place
   APT::Architecture "amd64";
   APT::Architectures:: "amd64";
in apt.conf, but this should not necessary, should it?

$ uname -m
x86_64

I'll add my sources.list; it does not name any active i386 resource. But maybe some other source is wrong.