Bug#603483: upgrade-reports: problem with changes in sources.list

[LAZA <laza74@arcor.de>]

Package: upgrade-reports
Severity: important
Tags: d-i

After changing the sources.list i can't go back to another configuration.

The manger denies ALL changes, i'm not able to activate an option und can't
change the server - also as i clicked on 'best server' the standard 'Haupt-
Server' (mein server) is actived an won't change.
Updating brings up a problem with some packages, that are not found on the
server:
sources.list:

#
# deb cdrom:[Debian GNU/Linux testing _Squeeze_ - Official Snapshot amd64
NETINST Binary-1 20101107-09:05]/ squeeze main

# deb cdrom:[Debian GNU/Linux testing _Squeeze_ - Official Snapshot amd64
NETINST Binary-1 20101107-09:05]/ squeeze main

deb http://http.us.debian.org/debian/ squeeze contrib non-free main

deb http://http.us.debian.org/debian/ squeeze-proposed-updates main

deb http://http.us.debian.org/debian/ sid main

deb http://http.us.debian.org/debian/ squeeze/updates contrib


I have another installation on work so i manually changed the sources.list and
then it is working...

Now i got an fatal error and i hope, the update-manager hang up and neither the
download is finished nor the program closes or the bug report pops up.

Some more informations:
Debian 6 is an installation as guest in virtualbox 3.2.8 from Ubuntu 10.04.1



-- System Information:
Debian Release: squeeze/sid
  APT prefers testing-proposed-updates
  APT policy: (500, 'testing-proposed-updates'), (500, 'unstable'), (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.32-5-amd64 (SMP w/1 CPU core)
Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

# 
# deb cdrom:[Debian GNU/Linux testing _Squeeze_ - Official Snapshot amd64 NETINST Binary-1 20101107-09:05]/ squeeze main

# deb cdrom:[Debian GNU/Linux testing _Squeeze_ - Official Snapshot amd64 NETINST Binary-1 20101107-09:05]/ squeeze main

deb http://http.us.debian.org/debian/ squeeze contrib non-free main

deb http://http.us.debian.org/debian/ squeeze-proposed-updates main

deb http://http.us.debian.org/debian/ sid main

deb http://http.us.debian.org/debian/ squeeze/updates contrib