IE 9 Beta: jQuery UI draggable not working at lower screen resolution

I have a webpage with jQuery UI draggable on a div. I’ve tested in IE6, IE8, Firefox, Chrome.

The dragging works in all cases.

For IE9 beta, the dragging works at screen resolution of 1600 x 1200 on a friend’s computer.

On my laptop with a 1366 x 768 resolution, dragging the div does not work.

Is this an IE9 bug?

Also what was strange: I had a couple of default stylesheets and then some alternate stylesheets. One of the background-images did not load from the default stylesheet
on my friend’s pc.

The solution to your problem is posted here :http://forum.jquery.com/topic/jquery-ui-does-not-work-on-ie9/