This is only in IE6.

The page I am working on sets the checked state of check boxes using attr("checked","checked"); This works fine. However if you apply this to a checkbox, then use WrapAll to wrap the checkbox it wraps but the checkbox does not retain it's checked state and does not return true to the :checked filter. All other browsers it is fine but might be worth noting as it took a few hours for me to figure out what the problem was in IE6.