apt-get update error???

出错信息如下：
W: GPG error: http://mirrors.geekbone.org unstable Release: Couldn't access keyring: No such file or directory
W: GPG error: ftp://218.22.45.5 unstable Release: Couldn't access keyring: No such file or directory
W: GPG error: ftp://218.22.45.5 unstable/non-US Release: Couldn't access keyring: No such file or directory
W: GPG error: http://www.stanchina.net ./ Release: Couldn't access keyring: No such file or directory
W: GPG error: http://archive.ubuntu.com hoary Release: Couldn't access keyring: No such file or directory
W: GPG error: http://archive.ubuntu.com hoary-security Release: Couldn't access keyring: No such file or directory
W: You may want to run apt-get update to correct these problems

知道的人指点一下，谢谢！

真的没人遇到这个问题吗？我把我的sources.list一并贴出来。
deb http://mirrors.geekbone.org/debian/ unstable main contrib non-free
deb ftp://218.22.45.5/debian-uo unstable misc marillat rareware ustc java firefly jrfonseca xorg
deb http://www.stanchina.net/~flavio/debian/ ./
deb-src http://www.stanchina.net/~flavio/debian/ ./
deb ftp://218.22.45.5/debian/ unstable main non-free contrib
deb ftp://218.22.45.5/debian-non-US/ unstable/non-US main non-free contrib

#deb http://www.ubuntu.org.cn/ubuntu/ hoary main restricted universe multiverse
#deb http://www.ubuntu.org.cn/ubuntu/ hoary-security main restricted universe multiverse

deb http://archive.ubuntu.com/ubuntu/ hoary main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ hoary-security main restricted universe multiverse
# include mplayer
deb http://debian.okey.net/debian-uo/ sid misc marillat rareware ustc java firefly

#kde3.4
deb http://pkg-kde.alioth.debian.org/kde-3.4.0/ ./

试试源 http://archive.ubuntu.org.cn/ubuntu/

apt-get install apt

换个源试一下吧