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IE renders every page I've ever seen fine.
But i would dare say that this is only because people actually test their stuff on it and make it work. In my personal experience, the most annoying browser to develop for these days is IE, while (the subset that i use of the) standards compliant things seems to just work on gecko and khtml browsers.
So yes, IE renders all pages just fine, but that says absolutely nothing about the quality of IE. The users might not care about why things works, but i really find it silly that developers have to spend time working around bugs instead of doing more productive things.