In viewing the logs for the site, I've noticed something humorous. To me, anyway. A number of visitors to the site have what appears to be spyware installed on their computers. (No, it's not from me. I can tell from the visited link.) Others don't seem to be able to add a site to their favorites, and keep having to search for my site. Even though it takes longer to search for "www.wontar.com" than it does than just typing it in directly.
My advice: Keep on clicking on that "ok" button every time it pops up. That's bound to fix the problem. Computers are smart, after all.