what does the LukeReqeust Handler tell you about the # of distinct terms in each field that you facet on?Where would I find that?
check: http://wiki.apache.org/solr/LukeRequestHandler Make sure you have:<requestHandler name="/admin/luke" class="org.apache.solr.handler.admin.LukeRequestHandler" />
defined in solrconfig.xml for a large index, this can be very slow but the results are valuable. ryan