diff --git a/application/displayblock.class.inc.php b/application/displayblock.class.inc.php
index 2ec9e66e8..b6886169b 100644
--- a/application/displayblock.class.inc.php
+++ b/application/displayblock.class.inc.php
@@ -1172,16 +1172,26 @@ EOF
 		}
 		if (($bAutoReload) && ($this->m_sStyle != 'search')) // Search form do NOT auto-reload
 		{
-			$sFilter = addslashes(str_replace('"', "'", $this->m_oFilter->serialize())); // Used either for asynchronous or auto_reload
-			$sExtraParams = addslashes(str_replace('"', "'", json_encode($aExtraParams))); // JSON encode, change the style of the quotes and escape them
+			// Used either for asynchronous or auto_reload
+			// does a json_encode twice to get a string usable as function parameter
+			$sFilterBefore = $this->m_oFilter->serialize();
+			$sFilter = json_encode($sFilterBefore);
+			$sExtraParams = json_encode(json_encode($aExtraParams));
 
-			$oPage->add_script('if (typeof window.oAutoReloadBlock == "undefined") {
-				    window.oAutoReloadBlock = {};
-				}
-				if (typeof window.oAutoReloadBlock[\''.$sId.'\'] != "undefined") {
-				    clearInterval(window.oAutoReloadBlock[\''.$sId.'\']);
-				}
-				window.oAutoReloadBlock[\''.$sId.'\'] = setInterval("ReloadBlock(\''.$sId.'\', \''.$this->m_sStyle.'\', \"'.$sFilter.'\", \"'.$sExtraParams.'\")", '.$iReloadInterval.');');
+			$oPage->add_script(
+				<<<JS
+if (typeof window.oAutoReloadBlock == "undefined") {
+    window.oAutoReloadBlock = {};
+}
+if (typeof window.oAutoReloadBlock['$sId'] != "undefined") {
+    clearInterval(window.oAutoReloadBlock['$sId']);
+}
+
+window.oAutoReloadBlock['$sId'] = setInterval(function() {
+	ReloadBlock('$sId', '{$this->m_sStyle}', $sFilter, $sExtraParams);
+}, '$iReloadInterval');
+JS
+			);
 		}
 
 		return $sHtml;
diff --git a/datamodels/2.x/itop-hub-connector/launch.php b/datamodels/2.x/itop-hub-connector/launch.php
index d680243f0..5e1f352d8 100644
--- a/datamodels/2.x/itop-hub-connector/launch.php
+++ b/datamodels/2.x/itop-hub-connector/launch.php
@@ -234,7 +234,7 @@ function MakeDataToPost($sTargetRoute)
 	if (MetaModel::GetConfig()->Get('demo_mode'))
 	{
 		// Don't expose such information in demo mode
-		$aDataToPost = array();
+		$aDataToPost = array('disabled' => true, 'reason' => 'demo_mode');
 	}
 	else
 	{
@@ -466,4 +466,4 @@ catch (Exception $e)
 		IssueLog::Error($e->getMessage());
 	}
 }
-	
\ No newline at end of file
+	
diff --git a/js/jquery.tablesorter.pager.js b/js/jquery.tablesorter.pager.js
index 81e53c59d..b6e328c8d 100644
--- a/js/jquery.tablesorter.pager.js
+++ b/js/jquery.tablesorter.pager.js
@@ -285,9 +285,9 @@ function sprintf(format, etc) {
 						}
 					});
 
-					$(table).find(':checkbox[name^=selectObj]').change(function() {
+					$(table).find(':checkbox[name^=selectObj]').on("change init-selection", function () {
 						storeSelection(table, table.config.container, this.value, this.checked, this.disabled);
-					}).trigger("change");
+					}).trigger("init-selection"); // don't need to trigger the very generic change event !
 				}
 				else if (table.config.select_mode == 'single')
 				{
diff --git a/js/table-selectable-lines.js b/js/table-selectable-lines.js
index 21f81e858..5a2d0bae2 100644
--- a/js/table-selectable-lines.js
+++ b/js/table-selectable-lines.js
@@ -59,8 +59,14 @@ $(document).ready(function () {
 		$lineClickedInput.click();
 	});
 
-	$(document).on('change', TABLE_SELECTOR+':has('+LINE_WITH_INPUT_IN_FIRST_CELL_SELECTOR+')', function (event) {
+	$(document).on('change', TABLE_SELECTOR, function (event) {
 		var $eventTarget = $(event.target);
+		if (!$eventTarget.has(LINE_WITH_INPUT_IN_FIRST_CELL_SELECTOR))
+		// Originally we had :has in the handler selector but performances were very bad :(
+		// Filtering directly in JQuery is far much quicker ! => N°2192
+		{
+			return;
+		}
 		if (!$eventTarget.is(INPUT_SELECTOR)) {
 			return;
 		}
@@ -69,7 +75,14 @@ $(document).ready(function () {
 	});
 
 	// check_all event is fired for tableSorter JQuery plugin
-	$(document).on("check_all", TABLE_SELECTOR+':has('+LINE_WITH_INPUT_IN_FIRST_CELL_SELECTOR+')', function () {
+	$(document).on("check_all", TABLE_SELECTOR, function (event) {
+		var $eventTarget = $(event.target);
+		if (!$eventTarget.has(LINE_WITH_INPUT_IN_FIRST_CELL_SELECTOR))
+		// Originally we had :has in the handler selector but performances were very bad :(
+		// Filtering directly in JQuery is far much quicker ! => N°2192
+		{
+			return;
+		}
 		$(this).find("tbody>tr").addClass(SELECTED_CLASS);
 	});
 
@@ -105,8 +118,9 @@ $(document).ready(function () {
 	function updateLines($inputChanged) {
 		var $selectedLine = $inputChanged.closest("tr");
 
-		if ($inputChanged.is('input:radio')) {
-			// didn't find a proper event fired when radio is deselected... so doing this !
+		// didn't find a proper event fired when radio is deselected... so doing this !
+		if ($inputChanged.is('input:radio'))
+		{
 			$selectedLine
 				.closest('table')
 				.find('tr')
diff --git a/js/utils.js b/js/utils.js
index 740443e19..be52a81d2 100644
--- a/js/utils.js
+++ b/js/utils.js
@@ -199,7 +199,7 @@ function ReloadBlock(divId, sStyle, sSerializedFilter, sExtraParams) {
 			$('#'+divId).block();
 
 			$.post(GetAbsoluteUrlAppRoot()+'pages/ajax.render.php?style='+sStyle,
-				{operation: 'ajax', filter: sSerializedFilter, extra_params: sExtraParams},
+				{operation: 'ajax', filter: sSerializedFilter, encoding: 'serialize', extra_params: sExtraParams},
 				function (data) {
 					$('#'+divId).empty();
 					$('#'+divId).append(data);
diff --git a/pages/ajax.render.php b/pages/ajax.render.php
index 2fcafb0fb..3ca298ffc 100644
--- a/pages/ajax.render.php
+++ b/pages/ajax.render.php
@@ -743,7 +743,16 @@ try
 				}
 				else
 				{
-					$oFilter = DBSearch::unserialize($sFilter);
+					try
+					{
+						$oFilter = DBSearch::unserialize($sFilter);
+					}
+					catch (CoreException $e)
+					{
+						$oPage->p("Invalid query (invalid filter) : <code>$sFilter</code>");
+						IssueLog::Error("ajax.render operation='ajax', invalid DBSearch filter param : $sFilter");
+						break;
+					}
 				}
 				$oDisplayBlock = new DisplayBlock($oFilter, $sStyle, false);
 				$aExtraParams['display_limit'] = true;