Thanks for the reply.  I ended up trying a fresh install  There were 
some quirks I didn't like, and I found out that 24.04 is due out soon, 
so I think I'll wait for it.

On 3/14/24 07:03, Stephen Partington via PLUG-discuss wrote:
> look at your PPA's and see if there is an update repo for them. you 
> can look at your ppa config to check them.
>
> Anything that is not from canonical might need updated repo information.
>