Thanks.....
Upgraded pacman.....
Tried system upgrade again.....
Went well, but got following messages (upgrading 459 packages), didn't watch display continuously, but pretty often, so, hopefully did not miss any other important messages....
upgrading gnupg
kill gpg-agent and dirmgr before using gnupg
.........
upgrading mono:
/tmp/alpm-8HLoAA/.INSTALL:
line 5: 3899 Illegal instruction (core dumped)
cert-sync /etc/ssl/certs/ca-certificates.crt
error: command failed to execute correctly
Yeah!
Tried to open Firefox.......
Took a while....but.....it opens now!
But is slow to respond....will try some other browsers....
Meanwhile, one other issue I've had is being able to change time to be correct for my location.
When I've tried using timedatectl and set correct timezone, it gave me error message that I could not do this.