Missing high-scoring results in 1.3

[Walter Underwood]

I'm seeing a really weird problem with Solr 1.3. The best match for a
query will not show up with 10 rows, but will show up if I request more,
sometimes 200, sometimes it takes 1000 rows.

I tried increasing the row size by 10 and with some of those increments,
the first hit would change to a more relevant result.

Here is the other weird part -- we have been running the indexing
system with Solr 1.1 and distributing those indexes to the 1.3
query servers. This showed up when we converted the index server
to 1.3. Luckily, we have not done that in production.

Here is the relevant part of solrconfig. Note that we have added a
JaroWinkler fuzzy search, so the dismax specs have extra decoration.

  <requestHandler name="groups" class="solr.SearchHandler">
    <lst name="defaults">
     <str name="defType">dismax</str>
     <str name="echoParams">none</str>
     <float name="tie">0.01</float>
     <str name="qf">

        exact^6.0 exact_alt^6.0 exact_base~jw_0.7_1^8.0 exact_alias^8.0
title^3.0 title_alt^3.0 title_base^4.0
     </str>
     <str name="pf">
        exact^9.0 exact_alt^9.0 exact_base^12.0 exact_alias^12.0 title^3.0
title_alt^4.0 title_base^6.0
     </str>
     <str name="bf">
        search_popularity^100.0
     </str>
     <str name="mm">1</str>
     <int name="ps">100</int>

    </lst>
    <lst name="appends">
      <str name="fq">type:group</str>
    </lst>
  </requestHandler>


wunder