Ok, we have identified a problem with one of scripts that was timing out. Because of this timout issue not everyones daily points were being saved to the archive (which is where the stats are read from). The script has been changed and should run properly tonight at its schedule time.
So shortly after midnight we should see the points come back to life. However, there most likely will be a side effect. For those peoples who stats have not been archived they will all get saved into todays stats. Example, if you have 5 points a day for the last 5 days that would normally be saved as 5 points for each day. But instead you will get 25 points saved for todays stats. This will most like give those users an extra boost for the next month as they will have one day where their points are higher than normal because it is an accumation of previous days.
After the job runs tomorrow we will look into the stats again to see if we can spot any additional problems.
Our apologies for this problem and the incovenience this has caused.