Hmm, not sure if that is correctly !? Did you install from the DVD ?
I was upgrading from alpha 2.37 to beta2. I also did a fresh net install on a virtual machine, I'll be testing a fresh DVD install in a virtual machine this evening when I get home from work.
The current installer is adding the avenard 'release' repo during a net or dvd installation.
From pre-install-from-repo.sh and pre-install-from-dvd.sh
AddRepoToSources "http://www.avenard.org/files/ubuntu-repos intrepid release"