I'm not entirely sure when it started, as I never log into my own installation's interface... I remember getting a report(s) several months back, but I figured it was something with the end user's browser at the time. Reports starting coming in more frequently so I tried it out myself finally. I'm assuming it's the result of one of the PHP5 upgrades.

If I'm reading your line of thinking correctly, maybe I should try changing it to www.run-down.com in case there's something in the cookie host setting that is incorrectly stripping the 'www.'?

Dan