One has to use http://labnol.blogspot.tw/2006/07/secret-firefox-trick-prevent-browser.html browser.tabs.loadDivertedInBackground = true in firefox to workaround it, as icewm is powerless to do it on its own!
OK at least I found a workaround. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org