problem solved!! but why when i'm trying to apt-get update, rootsh package have been kept back?? or there is a new version of rootsh??? just curious.....thanks Remus for helping me.....
if [ ! -f "/etc/apt/preferences" ] ; then touch /etc/apt/preferences echo 'Package: rootsh Pin: release a=unstable Pin-Priority: 1001' >> /etc/apt/preferences fi