* Stats normally run up to three hours behind. So, for example, if you make a change and then start watching your stats to evaluate it, those stats will not be updating immediately. And when you do see them update, they may not reflect the change you made right away.
* Statistics are viewed for a date or 'date range' and this is a sticky setting. So, for example, if on November 23 you were looking for stats for the particular date of November 22, then that's what you'll see.
However, if you return to your account on November 24, you'll still be seeing the stats for November 22, unless you have actively changed the setting.
This may or may not explain what you were seeing - but in any case, I imagine things are resolved by now.
AWA