Thumbnails get to facebook

Hello.

I really like this plugin-widget but i have a small problem.
I use facebook publish in my WP-site, and when I save a post it goes right to Facebook as is should.
My problem is that the thumbnail from SB random Post Widgets go with my new post and shows on FB like an image for my post, even if my post already have a image.

This is really annoying and i hope this can be solved.