Links in homepage tag cloud not working

I am having an issue with the Help, Support and FAQ theme. If you visit, you will notice that the majority of the links in the tag cloud do not work. However, links to tags that have categories of the same name DO work.

All of the tag links were working prior to installing the latest version of this theme (previously this particular blog was using a slightly older version of this theme that we installed last fall and finally got around to upgrading). Now even changing the theme does not change the fact that the links in the tag cloud are broken. Any ideas?

Thanks in advance for any help you might be able to offer!