Has anyone seen issues with the people picker screen not rendering
right, i.e., not scroll bars, no selector highlighting? We have some
custom branding, so I am trying to find out if this is some problem
with the RTW upgrade or something we did.

Here is a link to a screen shot of a search result from people picker
to show what I mean:

http://www.tuccio.com/peoplepickerscreenshot.JPG