Do you have the following hard autoCommit in your config (as the stock server does)?
<autoCommit> <maxTime>15000</maxTime> <openSearcher>false</openSearcher> </autoCommit> This is now fairly important since Solr now tracks information on every uncommitted document added. At some point we should probably hardcode some mechanism based on number of documents or time. -Yonik http://lucidimagination.com