Various points on comments here on the design of this camel:
Lot's of good thoughts in this thread, but this is among the best.

Work on the tracking package AFTER your tablet is stolen.

The I-phone app bears investigating, especially if WMAX comes out.

How many of you use a lock code?

If your IT had a lock code and splash screen offering a reward you might get it back.

Is there room in the IT to put in a sliver of C-4 so if the wrong password is entered X times it explodes?

I think one of the pieces that should be developed first is a "wipe personal info" app such that all personal info is wiped as soon as the machine thinks it's compromised. This could easily be restored from backup.