安装mysql出错！出错信息如下

xzhgch

系统安装sid，今天upgrade了以下，mysql启动不了了，于是完全删除后重装。
又报错，错误见下：

Selecting previously deselected package mysql-common.
(Reading database ... 20427 files and directories currently installed.)
Unpacking mysql-common (from .../mysql-common_5.0.7beta-1_all.deb) ...
Selecting previously deselected package libmysqlclient14.
Unpacking libmysqlclient14 (from .../libmysqlclient14_4.1.13-1_i386.deb) ...
Selecting previously deselected package libdbd-mysql-perl.
Unpacking libdbd-mysql-perl (from .../libdbd-mysql-perl_3.0002-1_i386.deb) ...
Selecting previously deselected package libmysqlclient12.
Unpacking libmysqlclient12 (from .../libmysqlclient12_4.0.24-10_i386.deb) ...
Selecting previously deselected package mysql-client.
Unpacking mysql-client (from .../mysql-client_4.0.24-10_i386.deb) ...
Selecting previously deselected package mysql-server.
Unpacking mysql-server (from .../mysql-server_4.0.24-10_i386.deb) ...
chage: the shadow password file is not present
Setting up mysql-common (5.0.7beta-1) ...
Setting up libmysqlclient14 (4.1.13-1) ...

Setting up libdbd-mysql-perl (3.0002-1) ...
Setting up libmysqlclient12 (4.0.24-10) ...

Setting up mysql-client (4.0.24-10) ...
Setting up mysql-server (4.0.24-10) ...
Stopping MySQL database server: mysqld.
Starting MySQL database server: mysqld...failed.
        Please take a look at the syslog.
/usr/bin/mysqladmin: connect to server at 'localhost' failed
error: 'Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)'
Check that mysqld is running and that the socket: '/var/run/mysqld/mysqld.sock' exists!

localepurge: checking system for new locale ...
localepurge: processing locale files ...
localepurge: processing man pages ...

这是什么问题呢？