I also have problems with visual editor in IE6, IE7 and Firefox 2. It worked for 1 day and from the next day its not working. I even tried in different systems but still the same issue. I deactivated all the plugins but still the same issue. I installed another WP 2.1 in another folder and there it works fine with both Visual editor and code editor, but here i get only code editor. I did not understand what tiny_mce is all about. Can somebody help me?