I have used Nedstat tracking on my sites for years and have found it to be a great help in finding out detailed information about my site's visitors. Recently Nedstat has undergone a site revamp and then it was changed totally to Webstats4u. In this transitional period, I noticed Explorer giving me messages about pop ups it had blocked whilst visiting my page for the first time on any given day. I have searched the code from my page to no avail and was becoming more and more frustrated.
I have since removed this code and hopefully when the page is loaded tomorrow, the offending pop up will no longer be there.