Comment 14 for bug 756719

it isn't just that. That was the first thing I checked and the /etc/apt/sources.list file was correct on CD. I can even run update&upgrade on livecd. So it must use some different file for sources.list during installing the target fs.

Since this comes at the very end of install, I tried copying sources.list from cd to target fs. Then I did couple of bind mounts and chrooted to target fs. I was able to do update&upgrade there too. I didn't yet find which sources.list it uses during gui installer. Definitely not the /etc/apt/sources.list on the liveCD.

I think this bug is two fold:

 1. It uses corrupt sources.list
 2. It does update from internet even not told to do so by installer settings

The latter bug reveals the first bug.