Group Wiki and Blog limitation on PCP Web site

I'm having a tough time figuring out this one. I have almost 30 different wiki and blog groups, but only about 20 of them show up on the initial PCP website in the box on the right under Group Wikis & Blogs. I've looked in the /Library/WebServer/Documents/index.html to see if I can find a way to increase the list, but no such luck. The funny thing is if I click on the Groups link on the top of the webpage, I see all the groups, so I know there's nothing wrong in my configuration. Could this just be a feature and not a bug? Thanks for your help.