Could be. Here's the validation output of your site... 127 errors. Could be most of them are because of your missing doctype on the first line. IE is much more picky about errors than the other browsers are, so start by fixing the doctype line, there's a chance that's all you need to do.
Alright... It was indeed the doctype declaration... I changed the wrong page's doctype and this is why I actually panicked a bit... Thank you for your input!!
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