Topic portlet's links break image links

[hennaheto]

When you click on the a keyword in the tag cloud the post(s) it
displays broken images; however, if you navigate to the very same post
in a different way the images work just fine. I must have done
something wrong or forgotten to do something, does anyone have any
idea how to fix this?

Thanks!
Tyler

100% working:
http://cru.caes.ucdavis.edu/web/2010/02/03/how-to-add-cas-authentication
http://cru.caes.ucdavis.edu/web/how-to-add-cas-authentication

Broken images:
http://cru.caes.ucdavis.edu/web/topics/CAS