Wait, it's not just my PC that does that? Why is this error message so vague and self contradictory?

My understanding is that it usually occurs whenever a daemon is unable to shut down correctly, so it locks up the entire process of shutting down.

The networking daemons were what used to cause it when I had Fedora installed, iirc. I would start looking there.

As for why it's so vague and self contradictory, I couldn't say.

Yes, the bad part of this message is not that it hapoens, but that it's so hard to find out what is actually causing it.

Definitely agree there.

Glad to hear I could make your day a little better :)