Blacklist calendar CSV import because it doesn't work the same as the others, and you should use iCal. If someone needs it, they can put it back in.

calendar/inc/class.calendar_import_csv.inc.php

@@ -2,6 +2,9 @@
 /**
  * eGroupWare
  *
+ * This plugin is blacklisted in importexport_helper_functions.  You should use iCal,
+ * but if you need to import CSV, you can remove the blacklist.
+ *
  * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
  * @package calendar
  * @subpackage importexport

importexport/inc/class.importexport_helper_functions.inc.php

@@ -29,6 +29,9 @@ class importexport_helper_functions {
 		'news_admin' => array(
 			'class.news_admin_import.inc.php',
 		),
+		'calendar' => array(
+			'class.calendar_import_csv.inc.php'
+		),
 	);
 
 	/**
@@ -460,6 +463,9 @@ class importexport_helper_functions {
 		$appnames = $_appname == 'all' ? array_keys($GLOBALS['egw_info']['apps']) : (array)$_appname;
 		$types = $_type == 'all' ? array('import','export') : (array)$_type;
 
+		// Testing: Comment out cache call above, use this
+		//$definitions = self::_has_definitions($appnames, $types);
+
 		foreach($definitions as $appname => $_types) {
 			if(!in_array($appname, $appnames)) unset($definitions[$appname]);
 		}