Created attachment 288417 [details] Backtrace from crash I can reproduce this by doing the following: 1) Right click my panel 2) Panel Properties 3) Add a new panel 4) Drag it anywhere 5) Boom It looks like the problem is in DBUS to me, since it fails an assertion with debugging enabled. With debugging off, I was getting a glibc "double free or corruption." Before this backtrace, I recompiled xfconf, xfce4-panel, dbus, and dbus-glib with CFLAGS="-ggdb", FEATURES="nostrip", and USE="debug".
please post `emerge --info` with all your bug reports
Created attachment 288589 [details] emerge --info Note that $FEATURES, $USE, $CFLAGS, and even $ACCEPT_KEYWORDS had been overridden in the original report. I was able work around this by wiping my XFCE config and starting over with two empty panels; however, there's still a bug in either DBUS or Xfconf depending on whether or not DBUS clients are supposed to be able to cause it to fail assertions.
Use XFCONF_FULL_DEBUG=yes in addition to those you mentioned earlier to really get ALL data And try dbus-1.6.10, reopen the bug if the problem persists with later copies in tree
