RH 6.0 workstation installation:  X with gdm etc. has been running
normally for over a year.  Overnight, the X server (XF86_SVGA) died,
cause unknown.  Now Xwrapper uses 98.3% of the CPU time without
any output (without starting XF86_SVGA).  I can manually start
XF86_SVGA (as root, or after chmod u+s XF86_SVGA, as a normal
user), and then I can start the window manager, etc., and use the
machine.

It appears that some file was left in a bad state (missing, wrong
permissions, ...) when the X-server died, but since man gdm and man
Xwrapper are equally helpful, I have no idea where to start looking.  It
would be most helpful if there were some documentation listing ALL
the files used/checked/created by Xwrapper/gdm/gdmgreeter/etc., and
what their contents and permissions should be.  I have had similar
problems on other machines, and I have had to re-install the X-
windows system just as if I were using Windows98.  The
current setup is just too brittle.