Many hangs during apt full-upgrade

Since upgrading to Ubuntu 23.10, running "apt full-upgrade" has resulted in many hangs of up to a minute or so during the upgrade procedure. These seem to happen at random and unpredictable steps during the upgrade. Running it just now, it hung for around a minute on this line:

Installing new version of config file /etc/lsb-release ...

At around the same time, the following was logged to /var/log/syslog, which may or may not be related:

2023-10-10T06:38:33.162713-07:00 albatross hud-service[3499]: #033[31mvoid DBusMenuImporter::slotGetLayoutFinished(QDBusPendingCallWatcher*)#033[0m: "No such interface “com.canonical.dbusmenu” on object at path /org/ayatana/bamf/window/73400498"

It then hung again for about a minute at:

Setting up apport (2.27.0-0ubuntu5) ...

but nothing was logged to syslog.

These hangs did not happen on 23.04.

I appreciate that this is all a bit vague, so am happy to do further debugging if someone can advise me what to do. I also appreciate that apt might not be the correct package to file this bug against - feel free to reassign it.

ProblemType: Bug
DistroRelease: Ubuntu 23.10
Package: apt 2.7.3
ProcVersionSignature: Ubuntu 6.5.0-7.7-generic 6.5.3
Uname: Linux 6.5.0-7-generic x86_64
ApportVersion: 2.27.0-0ubuntu5
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: Unity:Unity7:ubuntu
Date: Tue Oct 10 06:41:34 2023
InstallationDate: Installed on 2020-07-14 (1183 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
SourcePackage: apt
UpgradeStatus: Upgraded to mantic on 2023-09-16 (24 days ago)