Problem appears to be that XQueryTree somehow gives us a bad window; I haven't looked yet how that can happen or if that indicates a bug in X.
I noticed that i can trigger this more easily by using killall firefox-3.5 rather than shutting it down properly; from that it feels a bit like there is a window not properly removed from X.
my comment from Ubuntu Bug - https:/ /bugs.launchpad .net/ubuntu/ +source/ firefox- 3.5/+bug/ 401055/ comments/ 4:
band-aid with some debugging output should be available on trunk dailies (firefox-3.6 and xulrunner-1.9.2) in https:/ /edge.launchpad .net/~ubuntu- mozilla- daily/+ archive/ ppa
- http:// bazaar. launchpad. net/~mozillatea m/xulrunner/ xulrunner- 1.9.2.head/ annotate/ head%3A/ debian/ patches/ lp401055_ bz499498_ debug_bandaid. patch
Problem appears to be that XQueryTree somehow gives us a bad window; I haven't looked yet how that can happen or if that indicates a bug in X.
I noticed that i can trigger this more easily by using killall firefox-3.5 rather than shutting it down properly; from that it feels a bit like there is a window not properly removed from X.