New customers time out at check IE only!

Other browsers work great, but when using IE a new customer times out at the confirm order stage. The weird thing though is that I get the order even thought they never see it go through! Also, it is only the first time customers when they first set up. If they were to come back and login again things work fine. Any ideas??
My site is www.myfancypantz.com please excuse the misplaced logo etc. I just found out it looked this way in IE and have some that is going to fix it.

anyone???