X11 Issues

I had to do an archive and install this weekend ... afterwards X11 would not launch so I was unable to run my astronomy program Xephem or Open Office.

I reinstalled X11 from the Optional Install on the Install DVD and then the X11 2006 Update. Now when I launch X11 I get a full grayish screen (no menu bar or dock) with the X windows on the upper left of the screen and am still unable to run any X windows programs. I cannot accesss the menu bar nor the dock ... the only way I can get out of the screen is to do a Command Q.

I tried to reinstall Xephem from the CD and from the Terminal ... still not able to run the program. Reinstalled X11 again ... still to no avail.

Any suggestions ... anyone know how to TOTALLY uninstall X11?