Whole distro breaks down over 30 minute span.

[Draek]

Installation of Fedora Core 2 completed without problems or error
messages. Login works fine at the start, GNOME 2.5.91 starts. Not all
RedHat configuration tools work, like network panels, or most of the
"System Settings" and "System Tools" when running these from a console
window using my non-root user, i do not get a prompt for root password,
but a text error message saying:

Could not set exec context to user_u:sysadm_r:sysadm_t.

sometimes its not sysadm_r but rpmn_t or something. Looks like non-root
user is not allowed to run anything. If i run these tools after using
"su" then I can run them.

Eventually, no GNOME apps will start, including Ximian Evolution, giving
a large error message about not being able to communicate with the
network. Eventhough it works at first.

And in the end, I cannot even log in to a session in GNOME or log out
for that matter. The shutdown sequence shows tons of errors about
partitions not being found, and large error outputs that I cannot
copy/paste. I can however log in/out in the beginning after a clean
reboot. If I reboot my machine after all these errors, everything works
fine for a while, until i start not being able to run programs etc, like
described above.

This is a clean FC2T2 install, no additional programs have been
installed into the system as of yet.

>From what I understand so far in Linux, there seems to be a problem with
permissions in FC2T2, the non-root users cannot run everything, lots of
programs don't start without errors, and eventually the distro cannot be
used any longer.

The reason why I post this message is to see if anyone knows of an
already known issue that is causing my problem. I'm not sure if I
provided enough information, if there is something you need in order to
help me diagnose the problem, please email me at draek at shaw.ca and I
will do my best to acquire the info needed.

I'm in the process of attempting to do a full "yum -y update" to see if
that will fix anything.