Comment 1 for bug 217064

I started noticing this same problem about a week ago. The installer seems to be downloading some stuff from the repos which apparently isn't working with the older stuff on the install CD. I had this problem with both the desktop and alternate CDs.

Running the installer without an internet connection will fix the problem. You get a working Hardy Beta system. Once running, the update manager can get all the fresh bits.

I think the real problem here is that the installer can download some packages that aren't compatible with the install process. I don't know if the solution for that is just increased testing by the package maintainers to make sure this doesn't happen, or if the installer should be changed to not try and download any updates.