I updated to the new 2.1.1 version today. When the plugin is activated I can't switch beetwen HTML and Visual in the editor anymore. When I deactivate the plugin it works fine again. I use the widget to show the Popular Posts in the sidebar. With the new version there is a display problem with some special characters like german "ö" "ü" "ä" oder the symbol for Euro "€". See sidebar on http://www.katzeausdemsack.de (post 5 to 10 show the problem - at least on german windows system).