Well, for me at least, Xemacs (currently 21.5.26 from cvs) hates metacity, kwin and compiz and has been misbehaving for years. While I can forgive XEmacs' compiz headaches, I don't understand what causes conflicts with KDE's kwin. Especially since XEmacs is the only application I've ever seen showing these phenomena. I don't experience any flashing but strange re-sizing (while XEmacs should in fact be simply maximised) and mysterious movements of the XEmacs window after switching to another virtual desktop. I've simply not been using the maximise stuff for those reasons but it *is* indeed annoying. Mit freundlichen Grüßen, Wulf C. Krüger