No sources after Gutsy RC install

[fmaste]

When installing at the 82% (Scanning the security updates repository), without internet connection (I believe this is the problem), I Got this error:

"The security updates on security.ubuntu.com couldn't be accessed, so these updates will not be made available to you at this time. You should investigate this later.
Commented out entries for security.ubuntu.com have been added to the /etc/apt/sources.list file."

I pressed OK and continue installing. When finished I restarted my computer and go to the restricted drivers manager to install the nvidia driver but got this error:
"The software source for the package nvidia-glx-new is not enabled."
I tried updating my system, but there were no updates, I checked my sources.list and all the sources were commented!!

This should be corrected very soon, because Ubuntu without any sources is nothing!, no drivers, no updates, I even cannot install any new program!!
This is also a security problem, because there are no security updates, there should be enabled by default and not telling "You should investigate"!!
If the problem is that I made the installation without an internet connection is a big mistake because many people installs without internet!

Below is the attachment of my sources.list file.

[fmaste (fmaste)]

I reinstalled with an internet connection available and there were no problems!

An internet connection is not a must have for installing, imagine people that needs ndiswrapper, or that your connection is down, or having DNS problems, also people that needs a complex configuration, or that they don't have internet at all, etc!

Not everyone may notice that they sources are commented, they may be not even know what I am talking about

[miltonics (miltonics)]

Same problem in the release version.

[Albert Damen (albrt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has also been reported in the final release of Gutsy and therefore is marked as a duplicate of bug 154095. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.