I seem to be having an issue using .Show(500) on a div block where the MS filter:shadow filter does not render.  If I use .Show() without animation, the shadow filter works fine in IE, but as soon as I add the animation, the shadow does not render.  This is only an issue with IE (surprise) as all other browsers are using some derivative of the box-shadow CSS3 property and they're all working fine.  I even tried to add the IE specific class in the callback function using .addClass() and that didn't help either.  

Has anyone else seen this behavior with MS shadow filter and animation functions and found a work around?