Hi Marc,
I wasn't able to test the articles, but I found that the issue with the FAQs is most likely due to the fact that the module is set to use AJAX. I've updated the instructions for the FAQs provider to include a section explaining that the image expander, tabs and other Professional Edition features don't work with the FAQs module configured to use AJAX. I would also recommend that people not use the AJAX feature for SEO reasons, since the content made available through AJAX is not accessible to the search engines.
Here's the link to the updated FAQs page:
http://dnn.itcrossing.com/products/modules/metapost/providers/dnn-faqs/
Let me know if this doesn't solve the problem! I'm also happy to help troubleshoot the articles issues you were having.
Thanks,
Don