No, unfortunately not. I even took to messing around with half a dozen different shell replacements, and started wondering about the possibility of coding my own taskbar replacement... I've made sure the registry hacks in this thread are in, but it doesn't seem that they're doing much, unfortunately. Some hypotheses: - Explorer fails to "clear" hovered status for buttons. In other words, it keeps thinking you're hovering it, leading to the tooltips and menus. - Time aspect. After restarting explorer.exe it shuts up for a while. No data on how much time passes before it starts, though. - Ridiculously resistent to most "solutions" I've tried. I'd also like to say thanks to all the participants in this thread for trying.