Control: tag -1 confirmed Hi, I just experienced a similar issue as described by bug report #418. I thought, it might be helpful to track the lost window id (xprop -root), but funnily, the server-side nxagent X-Server has no registered windows in rootless applications mode: With the lost iceweasel window after resuming, as well as with a new iceweasel single application session, I get this output from xprop: """ gabmik@tjener:~$ xprop -root _XKB_RULES_NAMES(STRING) = "base", "pc105", "de", "nodeadkeys", "compose:rctrl,terminate:ctrl_alt_bksp" WM_STATE(WM_STATE): window state: Normal icon window: 0x0 """ The xprop -root command on the client side, however, provides information on the single application session window (iceweasel) when it is started new. In my case where the iceweasel window did not reappear on session resumption, no window id was listed on the client side. Hmmm... Weird phenomenon. Mike -- DAS-NETZWERKTEAM mike gabriel, herweg 7, 24357 fleckeby fon: +49 (1520) 1976 148 GnuPG Key ID 0x25771B31 mail: mike.gabriel@das-netzwerkteam.de, http://das-netzwerkteam.de freeBusy: https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-netzwerkteam.de.xfb