Hello,
try to use the new 2.1rc and don't get any data in the searchindex.
Tried first lucene, and switched than back so solr.
If I do an search in an mailfolder, i get in the dovecot-log
2012-02-06 22:17:11 | dovecot: | indexer-worker(xxxxxx): Indexed 0 messages in INBOX/dovecot
Log from solr. Feb 6, 2012 10:17:11 PM org.apache.solr.core.SolrCore execute INFO: [] webapp=/solr path=/select params={fl=uid,score&sort=uid+asc&fq=%2Bbox:120ed10bbe9dcd4c8d2e0000f8146a47+%2Buser:"xxxxxxx"&q=body:"solr"&rows=9159} hits=0 status=0 QTime=1
Maybe I miss something. Upgraded from 2.0.15 to 2.1(head from repository yesterday) With 2.0 i see, if i start an search, solr had to work on the mail, now happens nothing. Upgrade the schema.xml, delete the old index.
Regard Ingo Thierack