I use it every day, including tracking separate workouts so it should be loaded w/ data. Now it's telling me 'something is wrong with my username' when trying to login. Where can I find your email?
FYI - on a side note, I'm the creator of fitbolt.com, which also integrates w/ FitBit. It's cool to see the different uses of their API people are coming up with!
EDIT: found your email.. must be friday ;-)