I'm installing Ubuntu 11.04; I saw StackApplet in the Accessories menu. It claims that as of the newly installed version 1.4, StackApplet is no longer a Gnome 2 applet, but instead it'll live in the tray area... except I'm not even sure Ubuntu 11.04's Unity will have a tray area to begin with. Kinda baffled by the coincidence.
At any rate, can you please consider improving the way the tray icon behaves? Currently it does nothing on right click and opens a menu in place on left click; if the tray bar is placed at the bottom of the screen, this puts the 'Quit' menu item squarely below where I clicked. Basically, clicking on the StackApplet icons closes it; I'd have to drag up to use the program itself.