Course freezes when skipping through

Hello,Our course freezes when it's in the middle of loading a page and the user clicks on a button or URL that is already loaded. The course will freeze and the page counter will disappear. The only thing to do is refresh the page.For example, say you have a few URLs in the middle of the page. While it's loading the rest of the graphics and you click on one of the links that is already loaded, all the varables seem to go away and the whole course becomes disabled.The weird thing is... it only happens in IE Exploder.Using Lectora v 2005 SP3 (2481) Latest version of Java installed.Thanks,Ryan