.
Thread 3 (process 1700):
#0  0xb785f424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb74b7e96 in *__GI___poll (fds=0x8e77f80, nfds=1, timeout=-1)
    at ../sysdeps/unix/sysv/linux/poll.c:87
	resultvar = <value optimized out>
	oldtype = -516
	result = <value optimized out>
#2  0xffffffff in ?? ()
No symbol table info available.
#3  0x89fffff0 in ?? ()
No symbol table info available.
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
.
Thread 2 (process 1604):
#0  0xb785f424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb74b7e96 in *__GI___poll (fds=0x8a762c0, nfds=3, timeout=-1)
    at ../sysdeps/unix/sysv/linux/poll.c:87
	resultvar = <value optimized out>
	oldtype = -516
	result = <value optimized out>
#2  0xffffffff in ?? ()
No symbol table info available.
#3  0x89fffff0 in ?? ()
No symbol table info available.
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
.
Thread 1 (process 1593):
#0  0x0808a4d7 in ?? ()
No symbol table info available.
#1  0x08080a28 in PrivateWindow::allowWindowFocus (this=0x985a328, 
    noFocusMask=35, timestamp=0)
    at /build/buildd/compiz-0.9.2.1+glibmainloop4/src/window.cpp:662
	retval = <value optimized out>
#2  0x08083a11 in PrivateWindow::processMap (this=0x985a328)
    at /build/buildd/compiz-0.9.2.1+glibmainloop4/src/window.cpp:662
	allowFocus = <value optimized out>
	stackingMode = <value optimized out>
#3  0x08092e86 in CompScreen::handleEvent (this=0x8a434b8, event=0xbfdc4b7c)
    at /build/buildd/compiz-0.9.2.1+glibmainloop4/src/event.cpp:77
	attr = {x = 0, y = 24, width = 1468, height = 742, border_width = 0, 
  depth = 24, visual = 0x8a53d38, root = 346, c_class = 1, bit_gravity = 1, 
  win_gravity = 1, backing_store = 0, backing_planes = 4294967295, 
  backing_pixel = 0, save_under = 0, colormap = 32, map_installed = 1, 
  map_state = 0, all_event_masks = 6520959, your_event_mask = 6291472, 
  do_not_propagate_mask = 0, override_redirect = 0, screen = 0x8a49398}
	doMapProcessing = Unhandled dwarf expression opcode 0x9f