no Panel after installing Gnome

"thilo graupner" <[email protected]> Fri, 31 May 2002 11:28:55 +0200
Newsgroups gmane.comp.gnome.ximian.beta
Message-ID <000a01c20885$9833cf40$9901a8c0@2Gengine>
After installing GNOME on my RH7.2 distribution the panel is
disappeared. Also sound does not work. 
The panel virtually seems to be there: after maximizing a window the
space where the panel should be is spare..i can see the desktop there. 
What can I do?