debian 安装mysql或者php出问题

版本是4.0

先更新源

在/etc/apt/sources.list 中添加
deb http://http.us.debian.org/debian/ stable main
执行以下命令更新软件包列表：
apt-get update


更新源后，安装mysql就出错了，帮忙看下。。。

wzwen:~# apt-get install mysql-server-5.1
Reading package lists... Done
Building dependency tree... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.

Since you only requested a single operation it is extremely likely that
the package is simply not installable and a bug report against
that package should be filed.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
  mysql-server-5.1: Depends: mysql-client-5.1 (>= 5.1.41-1.dotdeb.1) but it is not going to be installed
                    Depends: libc6 (>= 2.7-1) but 2.3.6.ds1-13etch9+b1 is to be installed
                    Depends: libmysqlclient16 (>= 5.1.21-1) but it is not going to be installed
E: Broken packages


再比如，安装php也出错，好像是源包有问题。。。