Not really. The problem with IE6 was that it didn't implement web standards as they should have, so developers had to to a lot of hacks and tricks to have their websites compatible with all browsers. And IE6 was non-compliant with the HTML standards from the start if I remember well: I had a small website that looked good in IE/Netscape/Opera, but when IE6 was out a lot of people started complaining that my backgrounds would not be positioned as they were in Opera/Netscape and all sorts of things like that.