Edit: I don't know if this really means much; but, I notice something today when I was monitoring the situation. When I went to the My Stats tab it seemed to hang up. While it was hanging I checked one of my rigs and the unknown work rejects we're happening. I had been running at below 0.5 percent stales up to that point (suddenly I was at 20 percent; although my miner calls them unknown work). The My Stats tab has to access the database to display. Interesting coincidence?