Comment #3 on issue 396 by flukshun: Qt (and KDE) don't display menu if not on first display http://code.google.com/p/xmonad/issues/detail?id=396 i have this same issue. I do think it shows up somewhere, but it doesnt appear to be visible on either monitor. If I disable a monitor however, I'll that menu dialogues are showing up offset way to the right of where I clicked. With VLC its even stranger...some menus will work problem, whereas others will show up at the top of the current monitor with all the entries layed out horizontally instead of vertical. very strange behavior... i have vlc set to float, and k3b is handled using the default xmonad management settings. it may be a general qt issue + dual mon issue, but cant really isolate any consistent behavior