i would reinstall the whole desktop
for gmome2
Code:
su -
yum groupremove "General Purpose Desktop"
reboot
then in int3
Code:
yum groupinstall "General Purpose Desktop" "Graphical Administration Tools"
now if you also have xfce or kde4 installed it will be a bit easier to reinstall Gnome2
----------------------
if only the lower "panel" is missing
r-click the top panel and select " new panel"
the new one "should be the bottom one