https://bugzilla.redhat.com/bugzilla....cgi?id=124033
Sorry but your link seems to be broken. It is a helpful link. Yesterday I added Kernel and Development packages to a "desk top" install. I caused it to not recognize the FC2 DVD that I have. So not knowing what the problem was I resorted to the CD's. That required inserting disk 2 then 3 then 2 then 1 then 2,1,2,1,2,1 and finally 2. I also had to unmount each time. What a pain. I would think that system-config-packages would be able to take all of the files it needs from each disk as it is inserted once, but sadly no.
Today I confirmed my original mistake. What I had done was to use the button on the drive to close it. Then I suppose the automount got involved and confused the matter.
When using system-config-packages select what you want to add, when the drive opens, put the disk in the tray and then with your mouse select OK. The drive will then close and read the disk. It read from the DVD as expected. All is well again.