Hi - I am getting an error (Request Failed) when trying to leave a comment - the comment DOES get posted but the error is just weird and I can see people trying to post again because they think it didn't go...

some details:

Joomla 2.5.1
brand New installation of the Comment Component
I have not edited any files (so there shouldn't any UTF-8 problems?)
I AM on a Windows server - but everything else in Joomla works

and here's a link to an article with the comments below
http://www.backyardworkshop.com/blog-posts/all-blog-posts/164-featured-engineer.html

thanks for any ideas!