diff --git a/boot.php b/boot.php
index 55cac73aca..44a8d8c32a 100644
--- a/boot.php
+++ b/boot.php
@@ -11,7 +11,7 @@ require_once('include/cache.php');
 define ( 'FRIENDICA_PLATFORM',     'Friendica');
 define ( 'FRIENDICA_VERSION',      '2.3.1328' );
 define ( 'DFRN_PROTOCOL_VERSION',  '2.23'    );
-define ( 'DB_UPDATE_VERSION',      1140      );
+define ( 'DB_UPDATE_VERSION',      1141      );
 
 define ( 'EOL',                    "<br />\r\n"     );
 define ( 'ATOM_TIME',              'Y-m-d\TH:i:s\Z' );
@@ -1519,6 +1519,12 @@ function get_my_url() {
 	return false;
 }
 
+function zrl_init(&$a) {
+	proc_run('php','include/gprobe.php',bin2hex(get_my_url()));
+	$arr = array('zrl' => get_my_url(), 'url' => $a->cmd);
+	call_hooks('zrl_init',$arr);
+}
+
 function zrl($s,$force = false) {
 	if(! strlen($s))
 		return $s;
diff --git a/database.sql b/database.sql
index 80a9197fa5..16e3964b58 100644
--- a/database.sql
+++ b/database.sql
@@ -16,9 +16,11 @@ CREATE TABLE IF NOT EXISTS `addon` (
   `name` char(255) NOT NULL,
   `version` char(255) NOT NULL,
   `installed` tinyint(1) NOT NULL DEFAULT '0',
+  `hidden` tinyint(1) NOT NULL DEFAULT '0',
   `timestamp` bigint(20) NOT NULL DEFAULT '0',
   `plugin_admin` tinyint(1) NOT NULL DEFAULT '0',
-  PRIMARY KEY (`id`)
+  PRIMARY KEY (`id`),
+  KEY `hidden` (`hidden`)  
 ) ENGINE=MyISAM  DEFAULT CHARSET=utf8;
 
 -- --------------------------------------------------------
diff --git a/include/gprobe.php b/include/gprobe.php
new file mode 100644
index 0000000000..26254ad28b
--- /dev/null
+++ b/include/gprobe.php
@@ -0,0 +1,60 @@
+<?php
+
+require_once("boot.php");
+require_once('include/Scrape.php');
+
+function gprobe_run($argv, $argc){
+	global $a, $db;
+
+	if(is_null($a)) {
+		$a = new App;
+	}
+  
+	if(is_null($db)) {
+	    @include(".htconfig.php");
+    	require_once("dba.php");
+	    $db = new dba($db_host, $db_user, $db_pass, $db_data);
+    	unset($db_host, $db_user, $db_pass, $db_data);
+  	};
+
+	require_once('include/session.php');
+	require_once('include/datetime.php');
+
+	load_config('config');
+	load_config('system');
+
+	$a->set_baseurl(get_config('system','url'));
+
+	load_hooks();
+
+	if($argc != 2)
+		return;
+
+	$url = hex2bin($argv[1]);
+
+	$r = q("select * from gcontact where nurl = '%s' limit 1",
+		dbesc(normalise_link($url))
+	);
+
+	if(count($r))
+		return;
+
+	$arr = probe_url($url);
+
+	if(count($arr) && x($arr,'network') && $arr['network'] === NETWORK_DFRN) {
+		q("insert into `gcontact` (`name`,`url`,`nurl`,`photo`)
+			values ( '%s', '%s', '%s', '%s') ",
+			dbesc($arr['name']),
+			dbesc($arr['url']),
+			dbesc(normalise_link($arr['url'])),
+			dbesc($arr['photo'])
+		);
+	}
+
+	return;
+}
+
+if (array_search(__file__,get_included_files())===0){
+  gprobe_run($argv,$argc);
+  killme();
+}
diff --git a/include/plugin.php b/include/plugin.php
index 8196e87561..4ff78a8b4d 100644
--- a/include/plugin.php
+++ b/include/plugin.php
@@ -5,7 +5,7 @@
 if (! function_exists('uninstall_plugin')){
 function uninstall_plugin($plugin){
 	logger("Addons: uninstalling " . $plugin);
-	q("DELETE FROM `addon` WHERE `name` = '%s' LIMIT 1",
+	q("DELETE FROM `addon` WHERE `name` = '%s' ",
 		dbesc($plugin)
 	);
 
@@ -37,6 +37,16 @@ function install_plugin($plugin) {
 			intval($t),
 			$plugin_admin
 		);
+
+		// we can add the following with the previous SQL
+		// once most site tables have been updated.
+		// This way the system won't fall over dead during the update.
+
+		if(file_exists('addon/' . $plugin . '/.hidden')) {
+			q("update addon set hidden = 1 where name = '%s' limit 1",
+				dbesc($plugin)
+			);
+		}
 		return true;
 	}
 	else {
diff --git a/index.php b/index.php
index 442173eeb8..a409f47b41 100644
--- a/index.php
+++ b/index.php
@@ -92,13 +92,10 @@ if((x($_SESSION,'language')) && ($_SESSION['language'] !== $lang)) {
 	load_translation_table($lang);
 }
 
-if(x($_GET,'zrl')) {
+if((x($_GET,'zrl')) && (! $install)) {
 	$_SESSION['my_url'] = $_GET['zrl'];
 	$a->query_string = preg_replace('/[\?&]zrl=(.*?)([\?&]|$)/is','',$a->query_string);
-	if(! $install) {
-		$arr = array('zrl' => $_SESSION['my_url'], 'url' => $a->cmd);
-		call_hooks('zrl_init',$arr);
-	}
+	zrl_init($a);
 }
 
 /**
diff --git a/mod/friendica.php b/mod/friendica.php
index 52a064224a..28807b5b50 100644
--- a/mod/friendica.php
+++ b/mod/friendica.php
@@ -18,10 +18,18 @@ function friendica_init(&$a) {
 			$admin = false;
 		}
 
+		$visible_plugins = array();
+		if(is_array($a->plugins) && count($a->plugins)) {
+			$r = q("select * from addon where hidden = 0");
+			if(count($r))
+				foreach($r as $rr)
+					$visible_plugins[] = $rr['name'];
+		}
+
 		$data = Array(
 			'version' => FRIENDICA_VERSION,
 			'url' => z_root(),
-			'plugins' => $a->plugins,
+			'plugins' => $visible_plugins,
 			'register_policy' =>  $register_policy[$a->config['register_policy']],
 			'admin' => $admin,
 			'site_name' => $a->config['sitename'],
@@ -54,9 +62,18 @@ function friendica_content(&$a) {
 
 	$o .= '<p></p>';
 
-	if(count($a->plugins)) {
+	$visible_plugins = array();
+	if(is_array($a->plugins) && count($a->plugins)) {
+		$r = q("select * from addon where hidden = 0");
+		if(count($r))
+			foreach($r as $rr)
+				$visible_plugins[] = $rr['name'];
+	}
+
+
+	if(count($visible_plugins)) {
 		$o .= '<p>' . t('Installed plugins/addons/apps:') . '</p>';
-		$sorted = $a->plugins;
+		$sorted = $visible_plugins;
 		$s = '';
 		sort($sorted);
 		foreach($sorted as $p) {
diff --git a/update.php b/update.php
index 3c2ecebb6b..f793b89dd5 100644
--- a/update.php
+++ b/update.php
@@ -1,6 +1,6 @@
 <?php
 
-define( 'UPDATE_VERSION' , 1140 );
+define( 'UPDATE_VERSION' , 1141 );
 
 /**
  *
@@ -1223,3 +1223,10 @@ function update_1139() {
 		return UPDATE_FAILED ;
 	return UPDATE_SUCCESS ;
 }
+
+function update_1140() {
+	$r = q("alter table addon add hidden tinyint(1) not null default '0' after installed, add index(hidden) ");
+	if(! $r)
+		return UPDATE_FAILED ;
+	return UPDATE_SUCCESS ;
+}
\ No newline at end of file