Slide show missing from post in category only?

Hi SI team

this page here:

http://finalbug.net/

goes to the article:

http://finalbug.net/blog/entry/161-about-finalbug-net

Please note the Slide show that shows up in both of the above links.

This link here goes to the same post in the Category final BUG FAQs:

http://finalbug.net/blog/categories/17-beyond-bug

However the slide show does not show up.

Any idea what is going on?

thanks

Paul