Creating a new thread for this now, given Mike's graphs seem to have come unstuck.

I have a couple graphs on my stats page which haven't updated since January 13th: credit/day, RAC, and world position by total credit. I took a look at the HTTP headers for the credit/day bar graph, and the Last-Modified field says "Fri, 13 Jan 2012 20:27:10 GMT", which would appear to mean that the update has stuck there for my graphs. Downloading a fresh copy with wget to get around any caching Firefox would do confirms that it has not been updated (this assumes the gateway routers at my college don't do any caching either). The same problem appears on the credit/day graph on BURP's page. It looks like some graphs on Collatz and WCG are lagging too, although that could just be because the daily update finished about a half hour ago.

Thanks for any work or answer on this.

I can only confirm this. I have same problem, see my graphs.

It appears that my graphs have updated to the latest data now. Same for yours C0d3r. Thanks for anyone's work on this.

The cache purger got stuck. Gave it a kick.