kill commmand

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http://forums.fedoraforum.org – wanted to use the kill command to exit from the gnome termial....wanted to kill the terminal....i decided to use the kill command from the terminal, and i used the pid number for my gnome terminal, got it from the top command.., and priority 1 , and used the -s option,....kill -s......it killed the gnome terminal i was using, but it also eliminated my tabs ontop of the desktop, so i could not get into the terminal again....when i rebooted, it complete changed the gnome desktop, back to where the menu was years ago...i was using fed 17.....what happen, and how do i get fed 17 back to default de (HowTos)