Index: solr/project_solr.module
===================================================================
RCS file: /Users/wright/drupal/local_repo/contributions/modules/project/solr/project_solr.module,v
retrieving revision 1.87
diff -u -p -r1.87 project_solr.module
--- solr/project_solr.module	16 Feb 2011 08:09:33 -0000	1.87
+++ solr/project_solr.module	19 Feb 2011 21:04:45 -0000
@@ -233,7 +233,7 @@ function project_solr_apachesolr_modify_
 
   // If we don't have any explicit filter for the sandbox status of the
   // projects, add an explicit exclusion for sandbox projects.
-  if (!$query->get_filters('bs_project_sandbox')) {
+  if ($query->has_filter('type', 'project_project') && !$query->get_filters('bs_project_sandbox')) {
     // If not defined, we want to *hide* sandboxes (to match the
     // #default_value for the exposed filter), hence 1, with the third
     // 'exclude' parameter set to TRUE (inverts the sense of the filter).