Sharethis button automatically placed on top of entire blog

Hey guys,

At my dutch blog vollmer.nl i'm trying to add the "share this buttons" at the bottom of my blogposts.

I installed and activated the "share this" plugin (4.04) on my wordpress atahualpa theme. It works.

But apart from adding small buttons at the bottom of my blogposts, it also generates a facebook "like" button at the top of my blog, above my header.

Which is lame.

I can't figure out where to alter this. Can you guys help out?

Many thanks!