internal links problem

Hello,

Recently I migrated my wordpress blog to a new server, but there is a problem with internal linking, for example, the MORE link when clicked adds extra stuff to the url and the page goes to the wrong location:

1) http://artmak.net/blog/archives/category/tutorial

When you click on MORE link, it adds extra stuff like this:

http://artmak.net/blog/go.php?http://artmak.net/blog/archives/516#more-516

instead of just this just the correct link:

http://artmak.net/blog/archives/516#more-516

So what is this http://artmak.net/blog/go.php? how do I get rid of that?

Thanks,

Art