User blog comment:KyleH/Lucene Search launching soon/@comment-265264-20091012221830

Currently, it will not display results for shared help pages which do not also have a page on the local wiki. Also, note that on most wikis, the Help namespace isn't searched by default--you need to manually select the Help namespace checkbox.

Also, a quick update: we believe that we have resolved the performance issues that prevented the new search from being released site-wide last Wednesday, so we plan to try again this Wednesday. Sorry for the delay!