Here is a nice example i came upon in #debian support today:
Package files:
100 /var/lib/dpkg/status
release a=now
700 http://dl.google.com/linux/talkplugin/deb/ stable/main i386 Packages
release v=1.0,o=Google, Inc.,a=stable,n=stable,l=Google,c=main
origin dl.google.com
700 http://dl.google.com/linux/chrome/deb/ stable/main i386 Packages
release v=1.0,o=Google, Inc.,a=stable,n=stable,l=Google,c=main
origin dl.google.com
500 http://download.skype.com/linux/repos/debian/ stable/non-free i386 Packages
origin download.skype.com
1 http://backports.debian.org/debian-backports/ lenny-backports/non-free i386 Packages
release o=Debian Backports,a=lenny-backports,n=lenny-backports,l=Debian Backports,c=non-free
origin backports.debian.org
1 http://backports.debian.org/debian-backports/ lenny-backports/contrib i386 Packages
release o=Debian Backports,a=lenny-backports,n=lenny-backports,l=Debian Backports,c=contrib
origin backports.debian.org
1 http://backports.debian.org/debian-backports/ lenny-backports/main i386 Packages
release o=Debian Backports,a=lenny-backports,n=lenny-backports,l=Debian Backports,c=main
origin backports.debian.org
650 http://ftp.debian.org/debian/ testing/non-free i386 Packages
release o=Debian,a=testing,n=wheezy,l=Debian,c=non-free
origin ftp.debian.org
650 http://ftp.debian.org/debian/ testing/contrib i386 Packages
release o=Debian,a=testing,n=wheezy,l=Debian,c=contrib
origin ftp.debian.org
650 http://ftp.debian.org/debian/ testing/main i386 Packages
release o=Debian,a=testing,n=wheezy,l=Debian,c=main
origin ftp.debian.org
500 http://ftp.debian.org/debian/ squeeze-updates/non-free i386 Packages
release o=Debian,a=stable-updates,n=squeeze-updates,l=Debian,c=non-free
origin ftp.debian.org
500 http://ftp.debian.org/debian/ squeeze-updates/contrib i386 Packages
release o=Debian,a=stable-updates,n=squeeze-updates,l=Debian,c=contrib
origin ftp.debian.org
500 http://ftp.debian.org/debian/ squeeze-updates/main i386 Packages
release o=Debian,a=stable-updates,n=squeeze-updates,l=Debian,c=main
origin ftp.debian.org
700 http://security.debian.org/ squeeze/updates/non-free i386 Packages
release v=6.0,o=Debian,a=stable,n=squeeze,l=Debian-Security,c=non-free
origin security.debian.org
700 http://security.debian.org/ squeeze/updates/contrib i386 Packages
release v=6.0,o=Debian,a=stable,n=squeeze,l=Debian-Security,c=contrib
origin security.debian.org
700 http://security.debian.org/ squeeze/updates/main i386 Packages
release v=6.0,o=Debian,a=stable,n=squeeze,l=Debian-Security,c=main
origin security.debian.org
700 http://ftp.us.debian.org/debian/ squeeze/non-free i386 Packages
release v=6.0.3,o=Debian,a=stable,n=squeeze,l=Debian,c=non-free
origin ftp.us.debian.org
700 http://ftp.us.debian.org/debian/ squeeze/contrib i386 Packages
release v=6.0.3,o=Debian,a=stable,n=squeeze,l=Debian,c=contrib
origin ftp.us.debian.org
700 http://ftp.us.debian.org/debian/ squeeze/main i386 Packages
release v=6.0.3,o=Debian,a=stable,n=squeeze,l=Debian,c=main
origin ftp.us.debian.org
Pinned packages:
libc6:
Installed: 2.11.2-10
Candidate: 2.11.2-10
Version table:
2.13-24 0
650 http://ftp.debian.org/debian/ testing/main i386 Packages
*** 2.11.2-10 0
700 http://ftp.us.debian.org/debian/ squeeze/main i386 Packages
100 /var/lib/dpkg/status
dpkg:
Installed: 1.15.8.11
Candidate: 1.15.8.11
Version table:
1.16.1.2 0
650 http://ftp.debian.org/debian/ testing/main i386 Packages
*** 1.15.8.11 0
700 http://ftp.us.debian.org/debian/ squeeze/main i386 Packages
100 /var/lib/dpkg/status
perl:
Installed: 5.10.1-17squeeze2
Candidate: 5.10.1-17squeeze2
Version table:
5.14.2-6 0
650 http://ftp.debian.org/debian/ testing/main i386 Packages
*** 5.10.1-17squeeze2 0
700 http://ftp.us.debian.org/debian/ squeeze/main i386 Packages
700 http://security.debian.org/ squeeze/updates/main i386 Packages
100 /var/lib/dpkg/status
vlc:
Installed: (none)
Candidate: 1.1.3-1squeeze6
Version table:
1.1.13-1 0
650 http://ftp.debian.org/debian/ testing/main i386 Packages
1.1.3-1squeeze6 0
700 http://ftp.us.debian.org/debian/ squeeze/main i386 Packages
700 http://security.debian.org/ squeeze/updates/main i386 Packages
libva1:
Installed: 1.0.14-1
Candidate: 1.0.14-1
Version table:
*** 1.0.14-1 0
650 http://ftp.debian.org/debian/ testing/main i386 Packages
100 /var/lib/dpkg/status
1.0.1-3 0
700 http://ftp.us.debian.org/debian/ squeeze/main i386 Packages
No need to tell that it exploded in the users face.
The longer, the better does not apply everywhere.
greetz
devil