I have tested our online demos under IE9 browser and everything is working correctly with Silverlight and IFrame module. Please review the following video
. Could you please test our demos and record a video? If you reproduce the issue, please check which module is used to upload files (you can use the right button click on the input).
the Telerik team
If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their blog feed