chrism - 8:22 pm on Dec 3, 2011 (gmt 0)
I can't say for sure about the top 20, but the top ten were different. I did wonder if the changing settings were causing me to hit a different data center (if thats the right term!).
At the moment it has stopped changing, but I'll take a look if it starts again - how do i tell which ip address I'm hitting?