Facebook like buttons erroneously handled as one

I've implemented the like button on my WP blog, but for some reason some of them (not all of them) are interpreted as being the same button. If I press like, I will also like the ones that is interpreted as the same. I can't figure out why. There are several other problems 开发者_JAVA百科with what is shared on Facebook, but I think those problems are connected to this one.

It worked great for a few days, then I started getting an error each time I pressed the like button. After fiddling with the og:type value the error disappeared, but instead now I get this strange behaviour.

My implementation is so simple, I can't really think of any causes:

<div class="fb-like"><fb:like href="<?php the_permalink();?>" show_faces="true" width="600" font="arial"></fb:like></div>

I've found that the behaviour changes depending on what og:type I define in the header section, but with no value producing the correct result.

the blog can be seen at http://blog.parkov.dk/ (in Danish, though).

Anyone has experience with this?

Remove the href parameter and instead use the Open Graph meta tags. I see that you are using them but some required tags are missing:

• og:title
• og:url

IMPORTANT NOTE:
For the homepage use blog as og:type!