Hi I just did a clean install of 12.3. The install went fine but I had a problem with Online Update to bring my system up to date. So there were a lot of updates to install, at least 225. It was about 53% complete, I can't remember what was installing, but it appeared to have hung. I tried several attempts to abort, and it wouldn't abort. Eventually, I rebooted. Now when I try to run Online Update, I get the message "Removing shim" and Package Installation Progress has stalled at 5% complete, Total Progress is 0%. It's been nearly three hours stuck there. So how to recover from this?