Bug#589199:

[Marco Nicolini]

As requested, sources.list and the details of the version i'm trying to install
(my /etc/apt/preferences is empty, i would say its' a fresh out-of-the
box installation done with the netisnt images of squeeze. The only
thing i did to my sources.list is replace every occurence of "squeeze"
with "testing".

root at yuki:/var/log# apt-cache policy ardour
ardour:
  Installed: (none)
  Candidate: 1:2.8.9-1
  Version table:
     1:2.8.9-1 0
        500 http://ftp.de.debian.org testing/main Packages

root at yuki:/var/log# apt-cache policy jackd
jackd:
  Installed: (none)
  Candidate: 5
  Version table:
     5 0
        500 http://ftp.de.debian.org testing/main Packages

root at yuki:/var/log# cat /etc/apt/sources.list
#
# deb cdrom:[Debian GNU/Linux testing _Squeeze_ - Official Snapshot
amd64 NETINST Binary-1 20100217-22:04]/ testing main

#deb cdrom:[Debian GNU/Linux testing _Squeeze_ - Official Snapshot
amd64 NETINST Binary-1 20100217-22:04]/ testing main

deb http://ftp.de.debian.org/debian/ testing main non-free contrib
deb-src http://ftp.de.debian.org/debian/ testing main non-free contrib

deb http://security.debian.org/ testing/updates main contrib non-free
deb-src http://security.debian.org/ testing/updates main contrib non-free

Regards,
Marco