Comment 3 for bug 550541

StacktraceTop:
 _left_click (item=0x9baf800, event=0x0)
 task_item_left_click (item=0x9baf800, event=0x0)
 task_item_activate (widget=0x9baf800, null=0x0)
 ?? () from /usr/lib/libgobject-2.0.so.0
 g_closure_invoke () from /usr/lib/libgobject-2.0.so.0