I tried using different video drivers. The experimental i810 and vesa drivers cause the exact same behavior (the dialog freezes), so it's very likely not a driver issue.
(I couldn't get fbdev and vga to work at all, though.) Do you think I should link this to a X11 or GDM package? Which one? How about gnome-session? (see bug #24307) -- shutdown window freezes everytime https://launchpad.net/bugs/88015 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
