WP puts a line break after links even though I’ve asked it not to

Since I started using WP’s inbuilt page-builder to modify my blog’s sub-pages (links, about me etc) my links page has been playing up.
The page:
http://www.vaguely.org/blog/index.php/links/
is supposed to display links side by side, with a ‘.’ to separate each link, as in:

Category
Name of link . Name of link . Name of link . Name of link . Name of link . Name of Link etc

But now, WP inserts a line break after each link, displaying them as a list. Does anyone know why it’s suddenly doing this, and how to fix it? (I use the plugin Exec-PHP http://bluesome.net/post/2005/08/18/50/ to incorporate PHP tags into my WP pages).

Hope this makes sense!!!