Comment 2 for bug 1296422

StacktraceTop:
 _enable_fake_transparency () at /build/buildd/cairo-dock-3.3.99.beta1.1~20140219~bzr1717/src/gldit/cairo-dock-container.c:451
 _check_composite_delayed (data=data@entry=0x0) at /build/buildd/cairo-dock-3.3.99.beta1.1~20140219~bzr1717/src/gldit/cairo-dock-container.c:477
 g_timeout_dispatch (source=source@entry=0x93d7940, callback=0xb6d68ab0 <_check_composite_delayed>, user_data=0x0) at /build/buildd/glib2.0-2.39.92/./glib/gmain.c:4472
 g_main_dispatch (context=0x938e550) at /build/buildd/glib2.0-2.39.92/./glib/gmain.c:3064
 g_main_context_dispatch (context=context@entry=0x938e550) at /build/buildd/glib2.0-2.39.92/./glib/gmain.c:3663