@kyoungpsyd ~ Mine have zeroed out and come back about a dozen times this evening. If you notice, the font for all-time stats, highest day and current day at the bottom of the bar graph has changed. I suspect the folks in the back room are messing around. If yours haven't come back, refresh and see if they don't pop up. Otherwise, a little patience should do the trick.
@notesfromtheintern ~ If you check and your numbers have gone down, sometimes refreshing or clicking on a different link to get to the stats will straighten things out. At the end of the day, things always seem to match up as they should. I can't guarantee this, but I suspect it's a caching issue when things get busy.
I had real problems with stats wonkiness for about a month, and then they straightened out for a while. This, too, shall pass. ;-)