If I go to the 'My Settings' link in my forums, or here on this site, then click on 'View Posts By User', if goes to the search page and the message 'No topics were found using the criteria you provided.' comes up. It appears that searching for posts by a certain user are broken unless a search term is also provided. Can this be rectified?

Just wrote about same thing here:

http://www.activemodules.com/Commun...fault.aspx