I just upgraded to IE6 (no major problems so far, seems to be a little faster on my Athlon 850 WinME machine). But here's a major bummer. It looks the same as IE 5.5. I was under the impression that it would have a new look (ala Netscape 6.1 / Mozilla 0.9.2), but it turns out that is only with the new Windows XP OS. Apparently the IE6 for that will have the new look (and theme) while installing IE6 for ME/2000 and earlier looks exactly the same as before. I haven't fully explored the new IE6 functions, but the basic day-to-day stuff seems mostly unchanged, with perhaps a marginal gain in image displaying (on a cable modem so it's pretty snappy anyway).