diff --git a/fbpost/fbpost.php b/fbpost/fbpost.php
index 0d8df16b..b5e320fc 100644
--- a/fbpost/fbpost.php
+++ b/fbpost/fbpost.php
@@ -140,6 +140,9 @@ function fbpost_post(&$a) {
 		$value = ((x($_POST,'mirror_posts')) ? intval($_POST['mirror_posts']) : 0);
 		set_pconfig($uid,'facebook','mirror_posts', $value);
 
+		if (!$value)
+			del_pconfig($uid,'facebook','last_created');
+
 		$value = ((x($_POST,'suppress_view_on_friendica')) ? intval($_POST['suppress_view_on_friendica']) : 0);
 		set_pconfig($uid,'facebook','suppress_view_on_friendica', $value);
 
diff --git a/fromgplus/fromgplus.php b/fromgplus/fromgplus.php
index d2b496ba..5c7e1e28 100644
--- a/fromgplus/fromgplus.php
+++ b/fromgplus/fromgplus.php
@@ -71,6 +71,10 @@ function fromgplus_addon_settings_post(&$a,&$b) {
 		set_pconfig(local_user(),'fromgplus','account',trim($_POST['fromgplus-account']));
 		$enable = ((x($_POST,'fromgplus-enable')) ? intval($_POST['fromgplus-enable']) : 0);
 		set_pconfig(local_user(),'fromgplus','enable', $enable);
+
+		if (!$enable)
+			del_pconfig(local_user(),'fromgplus','lastdate');
+
 		info( t('Google+ Import Settings saved.') . EOL);
 	}
 }
diff --git a/gpluspost/gpluspost.php b/gpluspost/gpluspost.php
index ab0d07e8..415e031b 100644
--- a/gpluspost/gpluspost.php
+++ b/gpluspost/gpluspost.php
@@ -182,6 +182,9 @@ function gpluspost_settings_post(&$a,&$b) {
 			set_pconfig(local_user(),'fromgplus','account',trim($_POST['fromgplus-account']));
 			$enable = ((x($_POST,'fromgplus-enable')) ? intval($_POST['fromgplus-enable']) : 0);
 			set_pconfig(local_user(),'fromgplus','enable', $enable);
+
+			if (!$enable)
+				del_pconfig(local_user(),'fromgplus','lastdate');
 		}
 	}
 }
diff --git a/pumpio/pumpio.php b/pumpio/pumpio.php
index c45b474d..78b738fa 100755
--- a/pumpio/pumpio.php
+++ b/pumpio/pumpio.php
@@ -326,7 +326,7 @@ function pumpio_settings_post(&$a,&$b) {
 			set_pconfig(local_user(),'pumpio','post_by_default',intval($_POST['pumpio_bydefault']));
 
 			if (!$_POST['pumpio_mirror'])
-				set_pconfig(local_user(),'pumpio','lastdate', $lastdate);
+				del_pconfig(local_user(),'pumpio','lastdate');
 
 			//header("Location: ".$a->get_baseurl()."/pumpio/connect");
 		}
diff --git a/statusnet/statusnet.php b/statusnet/statusnet.php
index 1957cc96..abbda0e1 100644
--- a/statusnet/statusnet.php
+++ b/statusnet/statusnet.php
@@ -250,6 +250,10 @@ function statusnet_settings_post ($a,$post) {
 		set_pconfig(local_user(), 'statusnet', 'mirror_posts', intval($_POST['statusnet-mirror']));
 		set_pconfig(local_user(), 'statusnet', 'import', intval($_POST['statusnet-import']));
 		set_pconfig(local_user(), 'statusnet', 'create_user', intval($_POST['statusnet-create_user']));
+
+		if (!intval($_POST['statusnet-mirror']))
+			del_pconfig(local_user(),'statusnet','lastid');
+
 		info( t('StatusNet settings updated.') . EOL);
 	}}}}
 }
diff --git a/twitter/twitter.php b/twitter/twitter.php
index 7204ec5b..8a80f471 100755
--- a/twitter/twitter.php
+++ b/twitter/twitter.php
@@ -194,7 +194,11 @@ function twitter_settings_post ($a,$post) {
 		set_pconfig(local_user(), 'twitter', 'mirror_posts', intval($_POST['twitter-mirror']));
 		set_pconfig(local_user(), 'twitter', 'import', intval($_POST['twitter-import']));
 		set_pconfig(local_user(), 'twitter', 'create_user', intval($_POST['twitter-create_user']));
-                info( t('Twitter settings updated.') . EOL);
+
+                if (!intval($_POST['twitter-mirror']))
+                        del_pconfig(local_user(),'twitter','lastid');
+
+                info(t('Twitter settings updated.') . EOL);
 	}}
 }
 function twitter_settings(&$a,&$s) {