qBittorrent official forums

@Peter:  Thanks.  I've done steps 1 thru 3. 

I think the problem has to do with the unstable version "3.3.x".
Is 3.3.x > than 3.3.1 ?  If so, then maybe that's why I'm not upgrading. 
But actually it is wrong, and 3.3.x is older.  I would prefer to figure out how to manipulate where "3.3.x" is stored, and change it to "3.3.0".

I'm a bit concerned about apt-get remove and what is actually getting remove, and when I install, what will actually need to be re-configured.  I had issues between qbittorrent and qbittorrent-nox.

Thanks.

sudo apt-get remove <application>

will only remove the stated application,  configuration files will be left in place

sudo apt-get purge <application>

Will remove the application AND it's configuration files / data

If you also want to remove any orphaned dependencies from either command, follow up with

sudo apt-get autoremove

You can also add a -y predicate to the command line to accept any prompts that may occur such as "This action will remove xxkB from blah blah blah"

I removed qibttorrent.
I removed qbittorrent-nox.

I installed qbittorrent-nox.

I'm now on 3.3.1.

But I think in the future the PPA manager should avoid "3.3.X", because I think "X" is larger than a number, and apt-get won't do the upgrade.

Thanks!

Well, you are not supposed to mix the PPAs.
And the PPA manager rejects the package if it's older than the uploaded current one.

So ... stick to one PPA, and remove qBittorrent with 'apt-get remove' when you switch.
That's it, you should not worry about the rest.