Comment 2 for bug 159396

Yes. On a different computer...

First thing I had to do is add the CD-ROM, this time the normal install rather than the Alternate.

root@dzur:/crc/back# apt-cdrom add
Using CD-ROM mount point /cdrom/
Unmounting CD-ROM
Waiting for disc...
Please insert a Disc in the drive and press enter
Mounting CD-ROM...
Identifying.. [ac20a1ac35626cb607897968f3dd2440-2]
Scanning disc for index files..
Found 2 package indexes, 0 source indexes, 0 translation indexes and 1 signatures
Found label 'Ubuntu 8.10 _Intrepid Ibex_ - Release i386 (20081029.5)'
This disc is called:
'Ubuntu 8.10 _Intrepid Ibex_ - Release i386 (20081029.5)'
Copying package lists...gpgv: Signature made Wed 29 Oct 2008 05:24:11 PM MDT using DSA key ID FBB75451
gpgv: Good signature from "Ubuntu CD Image Automatic Signing Key <email address hidden>"
Reading Package Indexes... Done
Writing new source list
Source list entries for this disc are:
deb cdrom:[Ubuntu 8.10 _Intrepid Ibex_ - Release i386 (20081029.5)]/ intrepid main restricted
Unmounting CD-ROM...
Repeat this process for the rest of the CDs in your set.
W: Skipping non-exisiting file /cdrom/dists/intrepid/main/binary-i386/Packages
W: Skipping non-exisiting file /cdrom/dists/intrepid/restricted/binary-i386/Packages
root@dzur:/crc/back# apt-file update
Put CDROM labeled [Ubuntu_8.10__Intrepid_Ibex__-_Release_i386_(20081029.5)] in the cdrom device
read: 1: arg count
cp: cannot stat `/cdrom/dists/intrepid/Contents-i386.gz': No such file or directory
Can't get http://archive.canonical.com/ubuntu/dists/intrepid/Contents-i386.gz
root@dzur:/crc/back# mount /dev/scd0
root@dzur:/crc/back# ls /cdrom/
autorun.inf dists isolinux pics preseed ubuntu wubi.exe
casper install md5sum.txt pool README.diskdefines umenu.exe
root@dzur:/crc/back# find /cdrom/* -iname Contents-i386.gz
root@dzur:/crc/back# find /cdrom/* -iname Contents\*
root@dzur:/crc/back#

Is this perhaps related to the fact that I use a proxy?

root@dzur:/crc/back# cat /etc/apt/apt.conf.d/02proxy
Acquire::http { Proxy "http://192.168.1.30:3142"; };
root@dzur:/crc/back#