Page is a not externally linkable
MatthewHSE - 12:10 pm on Jul 27, 2005 (gmt 0)
Alternatively, you could ask your ISP for a static IP. It will cost extra, but it would give you a consistent IP address to check for. The downside of this is that it won't work if you access your site from anywhere other than your home Internet connection - for instance, if you use a laptop while travelling.
If you switch to Firefox and set the UA string to something unique, it should be trivial to write a little PHP script to serve AdSense only to UA's that don't match yours.