debian下面的apahce2 update之后就不能启动了

smthining

hiweed的server版本系统
今天安装之后，然后apt-get upgrade了，发现apache2不能启动了，还有mysql也挂了

debian:/etc/apache2/conf.d# /etc/init.d/apache2 start
Starting web server: Apache2.
debian:/etc/apache2/conf.d# /etc/init.d/apache2 stop
Stopping web server: Apache2httpd (no pid file) not running
.


debian:/etc/apache2/conf.d# /etc/init.d/mysql start
Starting MySQL database server: mysqld...failed.
        Please take a look at the syslog.

之前是一切正常的，请问是什么原因，如何既决呢？