I have windows skinned to look 'classic' - no crappy skins for me, thank you very much. As a result, the browser looks... bad!
Switching to the olive green windows xp style removes that complaint pretty much straight away, though.
It stopped responding nicely for some reason when trying to submit a form.
Tooltip text is "faded" in on tabs, but if the window below it isn't loaded, it doesn't repaint over quick enough - leaving a nasty trail of ghost tooltips.
The location of the new tab button is surprising and a little unsettling.
Quicktabs is better than the foxpose + firefox - looks better.
It kills our menu popup script which renders fine in IE6, Firefox, & Opera. *Sigh*.
Ditto the customised select box hacks we use.
It breaks our valuer picker box, which relies on document.getElementById() - I'll need to peek into that.
It feels like firefox still - the zoom works on the same keys, the UI layout is very similar, etc.
Hotkeys like ctrl+a don't work in location bar/search box to highlight all text.
Not a bad offering, overall, but we'll have to see how it stacks up in some seriously abusive tests.