Jonathan, You suspect correctly. Being a newbie to Linux, AOLserver, and programming in general, I have not been playing games with too many settings at all ;)
I did the --force --nodeps and that seems to have installed everything, but I haven't had time to start AOLserver and PG to make sure that everything is operational.
Should I upgrade my libxml with my newly built rpm now or wait a couple of months when I am sure that Don, Ben and crew will deliver OpenACS 4 on time, (unlike a certain $oftware giant (M$FT)) ???
Thanks again to everybody for the help with this!