Please ignore the "Component" setting. I'm not sure where to enter this suggestion in. Updating a RH60 system to RH61 from CD using the RedHat X11 installer program, I wondered why there's no possibility to stop the update after it has been started? I tried mouseclicks (there's not even an "abort" button), keyboard (ctrl-c, escape, ...), but wasn't able to stop it. There should be a "Stop" button, IMHO.
The problem is that after the upgrade starts (that is, after files are getting copied to the machine) you do not want to stop the upgrade, as you will leave your system in a compromised state and you might not be able to get it to boot again. This is all dependant on what files have been copied at the time that you stop the upgrade. If you are talking about aborting the upgrade prior to the copying of files, then I will put in a request that we have an abort command which will abort the upgrade, reboot the system, and leave you with the unchanged system.