joined:Dec 13, 2003
The alternate URL feature of the Adsense code does not work when IE is set to "high" security level. It works fine on "medium" security, and also in Firefox. I can't remember if this was the case before the latest XP updates, but I think I would have noticed it not working if that were the case.
Doesn't look as though there is anything to do about it, but I mention it in case it hasn't been noticed before.