diff --git a/src/backend/dbi/gnc-backend-dbi.c b/src/backend/dbi/gnc-backend-dbi.c
index aee2899de8..a61c5170d4 100644
--- a/src/backend/dbi/gnc-backend-dbi.c
+++ b/src/backend/dbi/gnc-backend-dbi.c
@@ -626,6 +626,10 @@ gnc_dbi_session_end( QofBackend *be_start )
         dbi_conn_close( be->conn );
 		be->conn = NULL;
 	}
+	if( be->sql_be.conn != NULL ) {
+		gnc_sql_connection_dispose( be->sql_be.conn );
+		be->sql_be.conn = NULL;
+    }
 	gnc_sql_finalize_version_info( &be->sql_be );
 
     LEAVE (" ");
@@ -636,6 +640,8 @@ gnc_dbi_destroy_backend( /*@ only @*/ QofBackend *be )
 {
 	g_return_if_fail( be != NULL );
 
+	qof_backend_destroy( be );
+
     g_free( be );
 }
 
diff --git a/src/backend/sql/gnc-backend-sql.c b/src/backend/sql/gnc-backend-sql.c
index b8da18efe7..edce1c7869 100644
--- a/src/backend/sql/gnc-backend-sql.c
+++ b/src/backend/sql/gnc-backend-sql.c
@@ -1082,11 +1082,14 @@ add_gvalue_string_to_slist( const GncSqlBackend* be, QofIdTypeConst obj_name,
     	getter = gnc_sql_get_getter( obj_name, table_row );
 		if( getter != NULL ) {
     		s = (gchar*)(*getter)( pObject, NULL );
+			if( s != NULL ) {
+			    s = g_strdup( s );
+			}
 		}
 	}
 	(void)g_value_init( value, G_TYPE_STRING );
     if( s ) {
-        g_value_set_string( value, s );
+        g_value_take_string( value, s );
 	}
 
 	(*pList) = g_slist_append( (*pList), value );
@@ -2350,6 +2353,21 @@ gnc_sql_get_sql_value( const GncSqlConnection* conn, const GValue* value )
 	}
 }
 
+static void
+free_gvalue_list( GSList* list )
+{
+    GSList* node;
+	GValue* value;
+
+	for( node = list; node != NULL; node = node->next ) {
+	    value = (GValue*)node->data;
+
+		g_value_unset( value );
+		g_free( value );
+	}
+	g_slist_free( list );
+}
+
 /*@ null @*/ static GncSqlStatement*
 build_insert_statement( GncSqlBackend* be,
                         const gchar* table_name,
@@ -2409,9 +2427,8 @@ build_insert_statement( GncSqlBackend* be,
 		(void)g_string_append( sql, value_str );
 		g_free( value_str );
 		(void)g_value_reset( value );
-		g_free( value );
 	}
-	g_slist_free( values );
+	free_gvalue_list( values );
 	(void)g_string_append( sql, ")" );
 
 	stmt = gnc_sql_connection_create_statement_from_sql( be->conn, sql->str );
@@ -2470,13 +2487,15 @@ build_update_statement( GncSqlBackend* be,
 			(void)g_string_append( sql, "," );
 		}
 		(void)g_string_append( sql, (gchar*)colname->data );
-		g_free( colname->data );
 		(void)g_string_append( sql, "=" );
 		value_str = gnc_sql_get_sql_value( be->conn, (GValue*)(value->data) );
 		(void)g_string_append( sql, value_str );
 		g_free( value_str );
 		firstCol = FALSE;
 	}
+	for( colname = colnames; colname != NULL; colname = colname->next ) {
+		g_free( colname->data );
+	}
 	g_list_free( colnames );
 	if( value != NULL || colname != NULL ) {
 		PERR( "Mismatch in number of column names and values" );
@@ -2484,10 +2503,7 @@ build_update_statement( GncSqlBackend* be,
 
 	stmt = gnc_sql_connection_create_statement_from_sql( be->conn, sql->str );
 	gnc_sql_statement_add_where_cond( stmt, obj_name, pObject, &table[0], (GValue*)(values->data) );
-    for( value = values; value != NULL; value = value->next ) {
-		g_free( value->data );
-    }
-	g_slist_free( values );
+	free_gvalue_list( values );
 	(void)g_string_free( sql, TRUE );
 
 	return stmt;
@@ -2520,6 +2536,7 @@ build_delete_statement( GncSqlBackend* be,
 	pHandler->add_gvalue_to_slist_fn( be, obj_name, pObject, table, &list );
 	g_assert( list != NULL );
 	gnc_sql_statement_add_where_cond( stmt, obj_name, pObject, &table[0], (GValue*)(list->data) );
+	free_gvalue_list( list );
 
 	return stmt;
 }
@@ -2770,7 +2787,10 @@ gnc_sql_finalize_version_info( GncSqlBackend* be )
 {
 	g_return_if_fail( be != NULL );
 
-	g_hash_table_destroy( be->versions );
+	if( be->versions != NULL ) {
+	    g_hash_table_destroy( be->versions );
+	    be->versions = NULL;
+	}
 }
 
 /**
diff --git a/src/backend/sql/gnc-slots-sql.c b/src/backend/sql/gnc-slots-sql.c
index cddc5e38d2..98501d5a43 100644
--- a/src/backend/sql/gnc-slots-sql.c
+++ b/src/backend/sql/gnc-slots-sql.c
@@ -435,7 +435,6 @@ gnc_sql_slots_load( GncSqlBackend* be, QofInstance* inst )
     GncSqlResult* result;
     gchar guid_buf[GUID_ENCODING_LENGTH+1];
     GncSqlStatement* stmt;
-    GValue value;
 	const GUID* guid;
 	KvpFrame* pFrame;
 
@@ -445,9 +444,6 @@ gnc_sql_slots_load( GncSqlBackend* be, QofInstance* inst )
 	guid = qof_instance_get_guid( inst );
 	pFrame = qof_instance_get_slots( inst );
     (void)guid_to_string_buff( guid, guid_buf );
-    memset( &value, 0, sizeof( value ) );
-    (void)g_value_init( &value, G_TYPE_STRING );
-    g_value_set_string( &value, guid_buf );
 
 	buf = g_strdup_printf( "SELECT * FROM %s WHERE obj_guid='%s'", TABLE_NAME, guid_buf );
 	stmt = gnc_sql_create_statement_from_sql( be, buf );
diff --git a/src/engine/SX-book.c b/src/engine/SX-book.c
index d530424434..9cf51afa25 100644
--- a/src/engine/SX-book.c
+++ b/src/engine/SX-book.c
@@ -253,8 +253,20 @@ book_sxes_setup(QofBook *book)
      sxes->sx_list = NULL;
      sxes->sx_notsaved = TRUE;
      qof_collection_set_data(col, sxes);
+}
 
-     /* XXX: FIXME:  MEMORY LEAK.  This object is never freed. */
+static void
+book_sxes_end(QofBook* book)
+{
+     QofCollection *col;
+     SchedXactions *sxes;
+
+     col = qof_book_get_collection(book, GNC_ID_SCHEDXACTION);
+	 sxes = qof_collection_get_data(col);
+	 if (sxes != NULL) {
+	     g_object_unref(sxes);
+	     qof_collection_set_data(col, NULL);
+    }
 }
 
 static void
@@ -300,7 +312,7 @@ static QofObject sxes_object_def =
   .type_label        = "Scheduled Transactions List",
   .create            = NULL,
   .book_begin        = book_sxes_setup,
-  .book_end          = NULL,
+  .book_end          = book_sxes_end,
   .is_dirty          = book_sxlist_notsaved,
   .mark_clean        = book_sxns_mark_saved,
   .foreach           = NULL,
diff --git a/src/libqof/backend/file/qsf-xml-map.c b/src/libqof/backend/file/qsf-xml-map.c
index 9900a1b754..584faaa624 100644
--- a/src/libqof/backend/file/qsf-xml-map.c
+++ b/src/libqof/backend/file/qsf-xml-map.c
@@ -311,6 +311,7 @@ gboolean is_qsf_map(const gchar *path)
 	doc = xmlParseFile(path);
 	if(doc == NULL) { return FALSE; }
 	if(TRUE != qsf_is_valid(QSF_SCHEMA_DIR, QSF_MAP_SCHEMA, doc)) {
+	    xmlFreeDoc(doc);
 		return FALSE;
 	}
 	map_root = xmlDocGetRootElement(doc);
diff --git a/src/libqof/backend/file/qsf-xml.c b/src/libqof/backend/file/qsf-xml.c
index e506b580e1..f3c3a8a641 100644
--- a/src/libqof/backend/file/qsf-xml.c
+++ b/src/libqof/backend/file/qsf-xml.c
@@ -83,6 +83,7 @@ qsf_is_valid(const gchar *schema_dir, const gchar* schema_filename, xmlDocPtr do
 	xmlSchemaFreeParserCtxt(qsf_schema_file);
 	xmlSchemaFreeValidCtxt(qsf_context);
 	xmlSchemaFree(qsf_schema);
+	g_free(schema_path);
 	if(result == 0) { return TRUE; }
 	return FALSE;
 }
@@ -155,6 +156,7 @@ gboolean is_our_qsf_object(const gchar *path)
 	if(TRUE != qsf_is_valid(QSF_SCHEMA_DIR, QSF_OBJECT_SCHEMA, doc)) { 
 		PINFO (" validation failed %s %s %s", QSF_SCHEMA_DIR, 
 			QSF_OBJECT_SCHEMA, path);
+		xmlFreeDoc(doc);
 		return FALSE; 
 	}
 	object_root = xmlDocGetRootElement(doc);
@@ -178,7 +180,11 @@ gboolean is_qsf_object(const gchar *path)
 	if(path == NULL) { return FALSE; }
 	doc = xmlParseFile(path);
 	if(doc == NULL) { return FALSE; }
-	if(TRUE != qsf_is_valid(QSF_SCHEMA_DIR, QSF_OBJECT_SCHEMA, doc)) { return FALSE; }
+	if(TRUE != qsf_is_valid(QSF_SCHEMA_DIR, QSF_OBJECT_SCHEMA, doc)) {
+		xmlFreeDoc(doc);
+	    return FALSE;
+	}
+	xmlFreeDoc(doc);
 	/* Note cannot test against a map here, so if the file is valid QSF,
 	accept it and work out the details later. */
 	return TRUE;
diff --git a/src/libqof/qof/qofbook.c b/src/libqof/qof/qofbook.c
index 9621e86453..f65cba0cb8 100644
--- a/src/libqof/qof/qofbook.c
+++ b/src/libqof/qof/qofbook.c
@@ -146,7 +146,7 @@ qof_book_destroy (QofBook *book)
     cols = book->hash_of_collections;
     g_object_unref (book);
     g_hash_table_destroy (cols);
-    book->hash_of_collections = NULL;
+    /*book->hash_of_collections = NULL;*/
 
     LEAVE ("book=%p", book);
 }