Just a quick observation: It’s easy to dismiss how much subtle tweaking and optimization is present in the Zonbu Firefox config. The layout, the icon sizes, the fonts being hand picked to make web pages look as “normal” as possible for someone coming from the Windows world… the colours, the extra plug-ins. Everything.
Go ahead and try and use Ubuntu Firefox for a few days and you’ll find yourself constantly interupted by requests to download and install add-ons, codecs, plug-ins or other piece of software. Over and over again. Ditto for Firefox and Internet Explorer on Windows…