We had some problems configuring cross-place searching with Lotus Quickr (Services for Domino). In our environment the Quickr server and the Domain Catalog server were on the same machine. According to the documentation there are some paramaters which should not be set on the Domain Catalog server. But if you ommit these parameters the cross-place search is not working. You do not get the option "search all places" within the extended search dialog of Quickr.
So to make cross-place searching work you have to include all of the parameters below into the QPCONFIG.XML file, especially the Domino server name and hostname parameter, even on the Domain catalog server:
|<search_places enabled="true" anonymous="true">|