Fedora33 slow su and ssh due to XAUTHORITY env

[Terry Barnaby]

In the last day or so my system has been showing long delays (> 30 secs) 
when doing a "su -" or "ssh" from an konsole terminal application that

has been opened as a manual session setup at KDE startup.

Investigating the konsole has the environment variable 
"XAUTHORITY=/var/run/sddm/xauth_nsAoIs". Now if you open a konsole from 
a right hand mouse button click popup on the desktop, that konsole has 
"XAUTHORITY=/tmp/xauth-1002-_0" and suffers no delays. Opening konsole 
from the main "F" start menu has
"XAUTHORITY=/var/run/sddm/xauth_nsAoIs" 
and so has delays.

Any ideas on what is going on here ? There was an update to sddm 
recently ...