After wondering why the data stopped flowing, I reverted to my original Analytics domain of http://geekswithblogs.net. After a time, I checked back and found this notice.
The demand for Google Analytics surpassed even our highest expectations and as a result some customers may temporarily experience report-update delays. All data continues to be collected and no data has been lost. We are currently adding resources to ensure high-quality service. We apologize for any inconvenience.
I guess a free program cannot be refused by geeks. New registrations seem to be suspended while they ramp up resources. A bumpy start to be sure.
To be clear, I am getting more data now, but the analysis pages are taking much longer to load. Everything is working, but it is nowhere near as snappy as it was a couple of days ago.