Comment 3 for bug 900117

StacktraceTop:
 pa_cvolume_set (a=<optimized out>, channels=<optimized out>, v=<optimized out>) at pulse/volume.c:76
 slider_menu_item_update_volume (percent=0.70422535211267612, self=<optimized out>) at /build/buildd/indicator-sound-0.8.0.0/./src/slider-menu-item.c:163
 handle_event (mi=<optimized out>, name=<optimized out>, value=<optimized out>, timestamp=<optimized out>) at /build/buildd/indicator-sound-0.8.0.0/./src/slider-menu-item.c:115
 dbusmenu_menuitem_handle_event (mi=0xf041a0, name=0x7f1d0c007c20 "change-value", variant=0xf346c0, timestamp=0) at /build/buildd/libdbusmenu-0.5.1/./libdbusmenu-glib/menuitem.c:1707
 event_local_handler (user_data=0x7f1d0c005d50) at /build/buildd/libdbusmenu-0.5.1/./libdbusmenu-glib/server.c:1530