If you are using the search functions on the forums and you keep getting no results try selecting 'Any poster' in the By User section.

The default is 'Search-All-Members only'  You would think that this means all members posts but it doesn't  :P  It means search members names only.  So unless someone's user name has the search word, you get no results.

This may be fixed with a later update to be more sensible but, for now, just broaden the search by selecting 'Any poster' instead and then it works fine.

OK, I altered the code so 'Any Poster' is now the default.  Thanks to OH at the YaBB forums for this tip.