Umm, I've been bugging around this a lot lately (reasonlessly), but here it is ... http://isteve.rulez.cz/others/xfce4-layout-switcher.tar.bz2 How to configure it and how to configure it not is in the README file ... It runs setxkbmap thru system(), which I hope is ok - I've been told 99% of any plugins use external tools, so ... I hope ;)