I've tried to find a cause/solution to this but i'm struggling. Basically i've created a responsive site and in IE7 and 8 its loading the mobile version of site due to its non support for media queries. I've enabled the CSS3 Media Queries by Wouter van der Graaf checkbox in the admin screen and also enabled css/js aggregation.
This is where the problem comes in, now when I go to the site in IE7/8 I get a white screen and a message saying the page isn't responding due to a long running script. Theres no errors in the console/ IE script debugger so I cant see specifically what's causing it. It must be something the above mentioned JS is doing/conflicting with something else to cause it.
Has anyone come across this before?