Sorry, it was because of `Xorg -configure` or `nvidia distributed video module configuring programs` generated xorg.conf.
these old programs generate X11R6 based conf files. currently our X is R7 and most packages were transition aged.
My problem as following :
Section "Files"
# RgbPath "/usr/X11R6/lib/X11/rgb"
the mlterm and xterm didn't work coorectly on X11R7.
they couldn't find name-based-color code. as the
rgb.txt wasn't in "/usr/X11R6/lib/X11".
we can fix this by modifying /etc/X11/xorg.conf as following :
RgbPath "/etc/X11/rgb"
the url below already has described the same problem :
http://lists.debian.org/debian-user/2005/11/msg00170.html
--
Sorry again!
written by Jung-hoon Han

