Comment 2 for bug 1020311

StacktraceTop:
 XGetWindowProperty (dpy=dpy@entry=0x12fa470, w=w@entry=214, property=property@entry=394, offset=offset@entry=0, length=length@entry=9223372036854775807, delete=delete@entry=0, req_type=req_type@entry=33, actual_type=actual_type@entry=0x7fff8e271430, actual_format=actual_format@entry=0x7fff8e27142c, nitems=nitems@entry=0x7fff8e271438, bytesafter=bytesafter@entry=0x7fff8e271440, prop=prop@entry=0x7fff8e271448) at ../../src/GetProp.c:61
 _wnck_get_window_list (screen=<optimized out>, xwindow=214, atom=394, windows=windows@entry=0x7fff8e2714c8, len=len@entry=0x7fff8e2714c0) at xutils.c:447
 update_client_list (screen=0x13d6180) at screen.c:1472
 do_update_now (screen=0x13d6180) at screen.c:2259
 update_idle (data=<optimized out>) at screen.c:2282