X won't work after an F3 install

[richard]

I have installed Fedora 3 on a G3 iBook (late 2002), but none of the 
graphical interfaces will work properly.
When I log into GNOME as root, I get the following messages: "There was 
an error starting the GNOME Settings Daemon.  Some things, such as 
themes, sounds, or background settings may not work correctly.  The 
Settings Daemon restarted too many times.  GNOME will still try to 
restart the Settings Daemon next time you log in."  Also: "Nautilus 
can't be used now, due to an unexpected error from Bonobo when 
attempting to locate the factory."  And "There was a problem registering 
the panel with the bonobo-activation server.  The error code is 3. The 
panel will now exit."

When I log in as non-privileged user ("rs") the session is terminated 
immediately with the messages:

"/etc/X11/gdm/PreSession/Default: Registering your session with wtmp and 
utmp
/etc/X11/gdm/PreSession/Default: running: /usr/bin/X11/sessreg -a -w 
/var/log/wtmp -u /var/run/utmp -x "/var/gdm/:0.Xservers" -h "" -1 ":0" 
"rs" Agent pid 6646

(gnome-session:6621): libgnomevfs-WARNING * *: Unable to create ~/.gnome 
directory: Permission denied.  Could not create per-user gnome 
configuration directory '/home/rs/.gnome2/': Permission denied

Earlier attempts to install worked graphically for a short while then 
degraded rapidly.  I tried running an X autoconfiguration called 
Xautoconfig-0.22-1a.ppc.rpm which makes little visible difference to the 
behaviour.

The machine boots OK and appears to work non-graphically.

Would appreciate any suggestions.

Richard