Not only are the stair count/floor count out of order, also the altitude readings and charts are going in random directions and way out of what they should be. This has to do with one of the latest Software updates, because everything worked Ok two weeks ago. Now I suddenly average 20-35 floors per day, before that my average was 15-16 and that was correct. The altitude chart errors are most annoying. I have reported this to Garmin Support, please do that also, otherwise they won't fix this. Go to: http://support.garmin.com/