Username not viewable by public

Current install:
Joomla 1.5 latest
CB 1.4 latest

I installed sample data and created a menu link to the UserList. When I preview the userlist while logged in as a registered user, I am able to view a members 'Avatar', Username and some general statistics. When viewing as a Non-Registered user, I can still view the avatar and general statistics, but cannot view their Username even though the "Username" text is still there. I would like for the Username to show for Non-Registered (Public) access. Can somebody shed some light as I'm sure this is an easy problem for the experienced.

Please See Attached image to see exactly what I mean.

Bump. I know somebody out there knows. Where the experts at?

make sure to set "everybody" in "User Group to allow access" in the tab (in tab management) where username field is displayed

bye

Thanks SO MUCH for your solution. I knew this was a simple fix I just wasn't sure where those particular permissions were. Again, thanks so much for this, you really made me very grateful. I hope I can help you sometime. Cheers.