当runnong apt-get update命令时，我得到了很多这样的错误
Ign http://archive.debian.org lenny/volatile/main Sources/DiffIndex Ign http://archive.debian.org lenny/volatile/contrib Sources/DiffIndex Ign http://archive.debian.org lenny/volatile/non-free Sources/DiffIndex Hit http://archive.debian.org lenny/updates/main Packages Hit http://archive.debian.org lenny/updates/contrib Packages Hit http://archive.debian.org lenny/updates/non-free Packages W: GPG error: http://archive.debian.org lenny/updates Release: The following signatures were invalid: KEYEXPIRED 1356982504 W: GPG error: http://archive.debian.org lenny/volatile Release: The following signatures were invalid: KEYEXPIRED 1358963195 W: You may want to run apt-get update to correct these problems
为什么我不能更新？ 所有这些都是在运行upgrade命令后完成的。
这是我的sources.list
deb http://archive.debian.org/debian/ lenny main contrib non-free deb-src http://archive.debian.org/debian/ lenny main contrib non-free deb http://archive.debian.org/debian-security lenny/updates main contrib non-fre e deb-src http://archive.debian.org/debian-security lenny/updates main contrib non -free deb http://archive.debian.org/debian-volatile lenny/volatile main contrib non-fr ee deb-src http://archive.debian.org/debian-volatile lenny/volatile main contrib no n-free
所有这一切与Debian GNU/Linux 6.0
用于签署档案的钥匙可能是旋转的。 您需要更新包含存档密钥的包：
sudo apt-get --allow-unauthenticated install debian-archive-keyring
问题是Debian 6.0和Lenny匹配。 我只是更新所有挤压replacesource.list ：
# main repo deb http://ftp.debian.org/debian/ squeeze main deb-src http://ftp.debian.org/debian/ squeeze main deb http://security.debian.org/ squeeze/updates main deb-src http://security.debian.org/ squeeze/updates main
然后升级。
现在一切都变好了