Index: src/main/java/com/xpn/xwiki/user/impl/xwiki/XWikiGroupServiceImpl.java
===================================================================
--- src/main/java/com/xpn/xwiki/user/impl/xwiki/XWikiGroupServiceImpl.java	(revision 23903)
+++ src/main/java/com/xpn/xwiki/user/impl/xwiki/XWikiGroupServiceImpl.java	(working copy)
@@ -567,7 +567,7 @@
             String where = createMatchUserOrGroupWhereClause(user, matchFields, order, parameterValues);
 
             if (withdetails) {
-                groups = context.getWiki().getStore().searchDocuments(where, nb, start, parameterValues, context);
+                groups = context.getWiki().getStore().searchDocuments(where, false, nb, start, parameterValues, context);
             } else {
                 groups = context.getWiki().getStore().searchDocumentsNames(where, nb, start, parameterValues, context);
             }
@@ -666,10 +666,10 @@
         StringBuffer queryString = new StringBuffer();
 
         // Add from clause
-        queryString.append(" FROM XWikiDocument as doc, BaseObject as obj, StringProperty as field");
+        queryString.append(" FROM BaseObject as obj, StringProperty as field");
 
         // Add where clause
-        queryString.append(" WHERE doc.fullName=:groupdocname and doc.fullName=obj.name "
+        queryString.append(" WHERE obj.name=:groupdocname "
             + "and obj.className=:groupclassname and obj.id=field.id.id");
         parameterValues.put("groupdocname", groupFullName);
         parameterValues.put("groupclassname", CLASS_XWIKIGROUPS);
Index: src/main/resources/queries.hbm.xml
===================================================================
--- src/main/resources/queries.hbm.xml	(revision 23903)
+++ src/main/resources/queries.hbm.xml	(working copy)
@@ -13,20 +13,20 @@
     select distinct doc.space from XWikiDocument doc
   </query>
   <query name="getAllDocuments">
-    select doc.fullName from XWikiDocument as doc
+    select distinct doc.fullName from XWikiDocument as doc
   </query>
   <query name="getAllPublicDocuments">
-    select doc.fullName from XWikiDocument as doc where (doc.hidden &lt;&gt; true or doc.hidden is null)
+    select distinct doc.fullName from XWikiDocument as doc where (doc.hidden &lt;&gt; true or doc.hidden is null)
   </query>
   <query name="listGroupsForUser">
-    select doc.fullName from XWikiDocument as doc, BaseObject as obj, StringProperty as prop
+    select distinct doc.fullName from XWikiDocument as doc, BaseObject as obj, StringProperty as prop
     where obj.name = doc.fullName
       and obj.className='XWiki.XWikiGroups'
       and obj.id = prop.id.id and prop.id.name='member'
       and (prop.value=:username or prop.value=:shortname or prop.value=:veryshortname)
   </query>
   <query name="getAllUsers">
-    select doc.fullName from XWikiDocument as doc, BaseObject as obj
+    select distinct doc.fullName from XWikiDocument as doc, BaseObject as obj
     where obj.name=doc.fullName and obj.className='XWiki.XWikiUsers'
   </query>
 </hibernate-mapping>