Comment # 9 on bug 1045375 from Neil Rickert

Responding to c#8

Yes, I agree that is confusing.

However, I went back and rechecked this morning.  And this time it worked
properly.

I think there is something amiss with XFCE, though not sure what.  On a
different computer, I logged into XFCE.  And it crashed.  I attempted to login
again, and got a quick crash back to the login screen (using "gdm").  So I
instead logged into Gnome.  And then I logged out, and logged in again to XFCE.
 And that worked this time.

I had the same thing happen about 1 week ago.  There seems to be something
wrong in XFCE that is fixed by login to Gnome, then logout.  (Yes, I know
that's a different topic, and I don't know how to document it, or I would open
another bug report).