IE fix seems to kill firefox

[anitaviz]

I have a large page (selects with several thousands of options loaded with xmlhttprequests)

I had some problems with this page because everytime it was unloaded firefox would hang(not responing, no window repainting, etc) for 10-20 seconds. And sometimes come up with the alert for javascript running to loong.

I tracked the problem to this:
// Prevent memory leaks in IE
// And prevent errors on refresh with events like mouseover in other browsers
// Window isn't included so as not to unbind existing unload events
jQuery(window).bind("unload", function() {
jQuery("*").add(document).unbind();
});

When uncommenting theses lines everything started running smoothly.

[flesler]

You can't just make everyone happy, huh :)

[flesler]

Related to #2586