Comment 34 for bug 1874272

Running 23.10 on a 6-core AMD Zen 3 CPU with 32GB RAM. Software Updater advertised availability of Noble Numbat 24.04 upgrade. All went OK until Cleaning up / "searching for obsolete software", 1 CPU core running "noble" went to 100%. Stayed like that for 4 hours. Eventually accepted the pop-up which offered to Force Close the app. Sounds like this bug, rather a showstopper for me. Fortunately there was a pre-upgrade snapshot that I could revert back to.