Vista - Index is running, but the only search results it returns are email

I have a pristine Vista setup. Brand new Dell machine, came with Premium that
I upgraded to Ultimate. I installed Office and other apps, and copied a hard
drive's worth of files from an old computer to the new machine. All files are
stored in usual locations in the user profile (Documents, Pictures, Music,
etc). Currently, the index CPL reports that it has indexed 38,000 items.

Problem: all searches in the quick search box in folder windows return zero
results. That's true whether I search for strings that appear in file names
or file contents or metadata. I always get zero results. If I open the Search
Home folder (Start | Search) and perform a search, I get results -- but it
appears it's ONLY finding email and email attachments.

What is wrong? How do I get the index to wake up and return document,
picture, music, etc results?

The index service appears to be running.
I rebuilt the index yesterday to see if that would fix the problem. No change.
The index CPL reports that Outlook, Offline files, Start menu, and Users are
being indexed. If I drill into the Users folder in the Modify screen, I see
my profile is selected for indexing.

This is a brand new machine and the index has never worked correctly.