If you are using the 1.0 version of the CSK, there was a problem with RSS Feeds and caching in the User Controls.
See this post:
http://www.asp.net/Forums/ShowPost.aspx?tabindex=1&PostID=472703
Or download the GCN:
http://www.gotdotnet.com/community/workspaces/Workspace.aspx?id=39959859-68b5-4f5e-bd85-c1a8555e39a9
Dave Ranck
Whatever your hand finds to do, do it with all your might
www.daveranck.com
Acadia Portal Systems
blog.daveranck.com