I installed RH9 Yahoo Messenger. I then restarted the system. On getting the text login prompt, I issued the command "startx" . After few seconds, the screen got flickered and gave a message "X Server waiting to shut down". And the GUI could not be started.

Please help me out of this problem.

if you think it is cos of YMessenger, then at text prompt do rpm -e ymessenger rather than startx.
though i highly doubt ymessenger can do something like that.

don't feel bad, the exact same thing happened to me, I can't load java plug ins either, a friend tried it w/ mandrake and it worked so I might try that.

When you installed ymessenger you were asked if you would like to add an entry to your .xinitrc so that ymessenger can start automaticly when you startx. The problem is if your home directory doesn't have an .xinitrc ymessenger creats it and leaves it empty. A quick fix of this is to erase the ".xinitrc" in your home directory. This cause X look in
/etc/X11/xinit/xinitrc for its start up instructions instead of doing nothing like ymessenger was telling it to do.

Ymessenger sucks if they don't know how X works they have no business messeing with your home .xinitrc file, but they programmed ymessenger to do just that.

from your home directory type
"rm .xinitrc" to kill it. I am weary of Red Hat as they start in X by default so good luck getting to a prompt so you can kill that empty file.