For those who think compiz is resource hungry and don’t use most of the plugins, now you can have transparency and smooth minimize/maximize effects with metacity. If you are using GNOME 2.22 (available on Debian Lenny, Ubuntu Hardy) you can just open gconf-editor and browse apps -> metacity -> general -> compositing_manager and mark the check-box! If you are using compiz, just open a terminal and type: metacity –replace. There you go, metacity as a composite manaegr . I’m testing it now!