Sharepoint 2007 Site Membership Web Part

We have often encountered the issue whereby the SiteMembership web part in Sharepoint 2007 does not display any site memberships at all. It is always blank at the time. I couldn't find out the reason for this unexpected behavior. Thus, I have built my own Site Membership web part to replace the OOTB SiteMembership web part.

You may download the source code here