Hi, it seems that IE9 leaks memory heavily when updating components with Ajax in IE9 document mode.
There is no leak after setting document to IE8 mode <meta http-equiv="X-UA-Compatible" content="IE=8"/> Any ideas to resolve this without forcing IE8 mode ? There have been past issues, but found no current issue related to this, quick start code is very simple, Opera, Firefox, Chrome work fine. public HomePage(final PageParameters parameters) { Label testDiv = new Label("testDiv", new PropertyModel(this, "data")); testDiv.setOutputMarkupId(true); add(testDiv); AjaxSelfUpdatingTimerBehavior timer = new AjaxSelfUpdatingTimerBehavior(Duration.milliseconds(200)); testDiv.add(timer); } public String getData() { Date now = new Date(); return now.toString(); } <html> <head> <!-- No leak if this is set <meta http-equiv="X-UA-Compatible" content="IE=8"/> --> </head> <body> <div wicket:id="testDiv"></div> </body> </html> -Heikki