Comment 4 for bug 774289

I do get notification of updates. I checked that by reverting a package (khelpcenter4) to an earlier version. I then got a notification that it needed to be updated, which is of course the correct effect.

I'm about ready to bypass the problem by downloading the Alternate Distribution CD and installing from there. But there has to be a bug here that will bite others sooner or later.

How can I learn about the mechanism by which distribution upgrades are detected and the notification issued?