參考下面四個連結，得到一個結論
http://www.ubuntu-tw.org/modules/newbb/viewtopic.php?viewmode=thread&topic_id=21734&forum=10&post_id=108842
http://wiki.ubuntu-tw.org/index.php?title=Totem
http://forum.ubuntu.org.cn/viewtopic.php?f=74&t=225655
http://forum.ubuntu.org.cn/viewtopic.php?f=74&t=253034&sid=7fce0cbb44a0a0cad8fb27d5b924634d
