Re: PPA for easy transparent (RGBA) Gtk
It's a bug in Compiz; it won't draw shadows for RGBA windows. This also explains why there's no shadow behind the Google Chrome window when you don't have native titlebars. (because the round corners of the Google Chrome window are drawn using RGBA)
Originally Posted by FuturePilot
If you want a composited desktop with shadows behind RGBA windows, you can use gconf-editor to enable compositing in Metacity.
I try to treat the cause, not the symptom. I avoid the terminal in instructions, unless it's easier or necessary. My instructions will work within the Ubuntu system, instead of breaking or subverting it. Those are the three guarantees to the helpee.