hi, experts, i'm a newbie to linux fc who's looking forward to support open source os.

i've recently updated my fc4 to fc5. things work okay until i reboot the system. when i've logged in and i found that i've lost the window frame (those maximize, minimize buttons) when i open any gnome application and i also notice that the workspace is missing from the bottom panel. when i try to run gnome-wm, the error message says, "metacity: error while loading shared libraries: usr/lib/libGLU.so.1 cannot restore segment prot after reloc: permission denied". does this have anything to do with my ati graphic driver? btw, i'm using ati mobility radeon x700 on my acer notebook. so, any experts on this civilized planet can help me on this matter? thanks.