[Plugin: Facebook Like Button Plugin] Why space below?

I installed the plug-in.
I see a lot of free space under the “I like” button.
I took a screenshot to prove that:
http://img153.imageshack.us/img153/8476/77441714.jpg
Why?
Is it possibile to remove it?

Thank you

http://wordpress.org/extend/plugins/facebook-like-button-plugin/