Well I just found the first thing out that sucks about Mozilla 1.0: it still has no default CSS or XSLT stylesheet when none is specified so you can view and parse, view and debug XML fragments easily.

It just means that Internet Explorer is stilll my XML Development browser of choice, for now.

There's supposed to be some way to configure client side stylesheets, so I'll try to go find that feature...I guess (shrug).