[Plugin: Simple Slideshow] misaligned display position in other posts

hello, I used the same plug-in shortcode, [simple_slideshow], on both of these posts, but the latter is misaligned as you can see. can anyone figure it out. i’m using latest versions of self hosted wordpress and latest plug-in too.

here is the correct one:
http://ibaanassociation.org/2011/12/03/christmas-caroling/

and the wrong one:
http://ibaanassociation.org/2012/02/rose-parade-3/

thanks for any help. 🙂

http://wordpress.org/extend/plugins/simple-slideshow/