I forgot to mention that my Jawbone UP, which was malfunctioning, is being replaced by the company itself instead of by the eBay seller who sold them to us. We had tried a couple of returns with the seller but the ones he exchanged for the broken one didn't seem to work any better.
When mine wouldn't hold a charge, I tweeted about it in despair, and the UP gods responded. I had not thought I could get an exchange because I bought them from an eBay reseller.
I look forward to counting steps again. I really miss the sleep data, too!