[support] Odd URL in log

I was looking through my log today and saw this URL: http://www.mydomainname.com/blog/blog/29/blog/blog/blog/blog/blog/blog/blog/... Anyone have a clue what would cause this? The log shows it's been visited 400+ times in the last week! It takes you to the same page that http://www.mydomainname.com/blog does. Ideas? Thanks, Skip