Just installed with no problems, but I've cahnged it to update the stats via CRON. All of my scheduled tasks are done via a real CRON. I have it updating the cache every 5 minutes, which is good enough.
Had thought about every couple minutes, but 5's a nice good number.

Now users will always be loading the stats from the cache. I jsut have to decide now how I want to group the stats because I'm going to break up the list a bit into sections (instead of one big list).
Great job!