Blank slide on slider after update plugin

Hi, I’ve blank 3rd slide on slider on my blog: http://mobirank.pl and I don’t know how to delete it? It shouldn’t be visible, couse only 2 news are in slide cathegory. I’ve just update Jetpack by WordPress.com and WordPress SEO plugins, and after that 3rd blank slide is visible. I’ve just turned off and turned on again this plugins but there is still the same situation. Have you got any idea, what to do with that? Thanks in advance.

http://wordpress.org/plugins/jetpack/