Index: includes/actions.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/actions.inc,v
retrieving revision 1.16
diff -u -p -r1.16 actions.inc
--- includes/actions.inc	5 Sep 2008 09:29:06 -0000	1.16
+++ includes/actions.inc	12 Sep 2008 01:00:07 -0000
@@ -327,10 +327,14 @@ function actions_save($function, $type, 
     watchdog('actions', 'Action %action saved.', array('%action' => $desc));
   }
   else {
-    // aid is the callback for singleton actions so we need to keep a
-    // separate table for numeric aids.
-    db_query('INSERT INTO {actions_aid} VALUES (default)');
-    $aid = db_last_insert_id('actions_aid', 'aid');
+    // Get the last numberic aid from the actions table (is this compatible with other databases?)
+    //$aid = db_result(db_query_range("SELECT CAST(aid AS UNSIGNED) aid FROM actions ORDER BY aid DESC", NULL, 0, 1));
+    //$aid = is_numeric($aid) ? $aid++ : 1;
+    
+    // Get the last aid inserted and increment
+    $aid = variable_get('actions_last_aid', 0) + 1;
+    variable_set('actions_last_aid', $aid);
+    
     db_query("INSERT INTO {actions} (aid, callback, type, parameters, description) VALUES ('%s', '%s', '%s', '%s', '%s')", $aid, $function, $type, $serialized, $desc);
     watchdog('actions', 'Action %action created.', array('%action' => $desc));
   }
Index: modules/system/system.install
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.install,v
retrieving revision 1.263
diff -u -p -r1.263 system.install
--- modules/system/system.install	6 Sep 2008 08:36:21 -0000	1.263
+++ modules/system/system.install	12 Sep 2008 01:00:21 -0000
@@ -500,19 +500,6 @@ function system_schema() {
     'primary key' => array('aid'),
   );
 
-  $schema['actions_aid'] = array(
-    'description' => t('Stores action IDs for non-default actions.'),
-    'fields' => array(
-      'aid' => array(
-        'description' => t('Primary Key: Unique actions ID.'),
-        'type' => 'serial',
-        'unsigned' => TRUE,
-        'not null' => TRUE,
-      ),
-    ),
-    'primary key' => array('aid'),
-  );
-
   $schema['batch'] = array(
     'description' => t('Stores details about batches (processes that run in multiple HTTP requests).'),
     'fields' => array(
@@ -3049,6 +3036,18 @@ function system_update_7010() {
 }
 
 /**
+ * Remove the 'actions_aid' table.
+ */
+function system_update_7011() {
+  $ret = array();
+  $aid = db_query("SELECT aid FROM {actions_aid} ORDER BY aid DESC");
+  variable_set('actions_last_aid', is_numeric($aid) ? $aid : 0);
+  db_drop_table($ret, 'actions_aid');
+  
+  return $ret;
+}
+
+/**
  * @} End of "defgroup updates-6.x-to-7.x"
  * The next series of updates should start at 8000.
  */