As I noted the other day, Sitemeter seemed to be having problems over the weekend.
It appears to have been due to a server outage:
It seems that on Friday November 24th, “Black Friday” (known as such because it’s the busiest shopping day of the year) a handful of SiteMeter servers failed, including the one that hosts www.sitemeter.com. From what we’ve heard, the internet had more traffic on this day than ever in its history. We also understand that many sites and server farms became over stressed under the load. At this time we’re only able to speculate but it may be that a handful of our sites succumbed to the same fate.
We’re slowly bringing the downed servers back online but in some cases we’re unable to retrieve data lost during the outage. If your stats are hosted on s21, s24, or s25 you will most likely be missing data from approximately Friday Nov 23rd to Monday Nov 26th.
The counter for BtB is on the s24 server, so the visitor count is probably off by a few hundred people.
