Just heard that the reason my past comments on the availability of SiteMeter are so popular today is because the service is unavailble currently.
I cancelled my SiteMeter subscription last week, and went back to free status, which is really irrelevant as I took the tracking code off of my blog pages.
If anyone is interested, I am more than willing to share the PHP code and database structure I set up to track my own blogs. It works fine, except when my connection to the outside world goes down. It is more limited in scope, but I use an array of IP tracking tools and queries to slice and dice my data.
Some info available here.