Downloaded Firefox 1.0 this morning. I had been putting off downloading it until version 1 for no real reason other than laziness. Within about 30 seconds of use, I was completely converted. I will never use IE again. Total download was under 5 MB, and the browser is so fast and smooth that it's not even close. Also, the minimalist interface is fantastic. Some pages I frequent have displayed differently on FF vs IE, but for the most part I've preferred how FF displays them. Plus the image place holders are the old Netscape ones which just made my day. Finally, I've been using about:blank as my homepage in IE for, what, 5 years? Or more? But I loooove the homepage that Google put together (I assume) which is the default when you install FF.
Next up is Thunderbird, I guess. Is anyone using it?