Just do what i did go to synaptic pack manager unistall compiz install it again, then somethin else i did was to uninstall ubuntu tweak completly and my os is more stable than ever. Jimmy A. Trejos Camacho Guia Naturalista/Naturalist Guide Asistente de Filmacion/Filmming Field assistant Costa Rica.Alajuela Grecia. Cel: (506) 8817-8165 Skype: jimmytc1 Web:www.tamanduatours.com ________________________________ From: Julian Pitt