Todd,
No image was attached either time, but I think I know what you're talking about. Facebook recently changed the behavior of their Like buttons to always include an image.. if it isn't specified, it 'guesses' the best one. We're working on some updates for the next release which will allow you to specify the image. Until then, there's some tips you can use in the following post, hopefully, that will help:
www.sourcecoast.com/forums/topic?id=1850&p=1#p8095
Let us know if this is what you're looking for, or if there's something else we can help with.
Inconsistent images importing for FB likes
