Well then you need to look at your XML document. The links themselves are getting "http://localhost/Website/%20" from your datasource unless you are having it prepend (yes, I just made up an antonym for append) it in the codebehind somewhere.
Look at where the link is created in your source (it's possible you have that localhost part in the actual hyperlink markup itself).
Look in your databind statement in your code behind page.
Look in your datasource at the record itself.
If you can't find it, post all three of those.
-JA