xinetd服务启动失败！

今天开机发现没有声音，于是按照往常，/etc/init.d/alsasound restart
有声音了，于是，习惯性的切换窗口（alt+tab),马上死机。于是不停的杀掉kde，不停的实验，发现只要重复这个步骤马上死机。曾怀疑是昨天搞compiz时引来的毛病，于是，关特效，或换成compiz.问题依旧，好像声音和（alt+tab)不能共存！！只要启动声音，一按(alt+tab)就死机！
检查/var/log/messages发现xinetd这个服务启动失败了。于是/etc/init.d/xinetd restart发现还是启动失败！！
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/chargen [file=/etc/xinetd.conf] [line=26]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/chargen-udp [file=/etc/xinetd.d/chargen-udp] [line=14]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/cups-lpd [file=/etc/xinetd.d/cups-lpd] [line=15]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/daytime [file=/etc/xinetd.d/daytime] [line=11]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/daytime-udp [file=/etc/xinetd.d/daytime-udp] [line=14]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/discard [file=/etc/xinetd.d/discard] [line=15]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/discard-udp [file=/etc/xinetd.d/discard-udp] [line=14]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/echo [file=/etc/xinetd.d/echo] [line=15]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/echo-udp [file=/etc/xinetd.d/echo-udp] [line=14]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/netstat [file=/etc/xinetd.d/netstat] [line=15]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/rsync [file=/etc/xinetd.d/rsync] [line=16]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/sane-port [file=/etc/xinetd.d/sane-port] [line=12]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/servers [file=/etc/xinetd.d/servers] [line=14]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/services [file=/etc/xinetd.d/services] [line=14]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/svnserve [file=/etc/xinetd.d/svnserve] [line=14]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/systat [file=/etc/xinetd.d/systat] [line=15]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/tftp [file=/etc/xinetd.d/tftp] [line=17]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/time [file=/etc/xinetd.d/time] [line=15]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/time-udp [file=/etc/xinetd.d/time-udp] [line=15]
Feb 27 21:33:20 linux-123t xinetd[5417]: Reading included configuration file: /etc/xinetd.d/vnc [file=/etc/xinetd.d/vnc] [line=15]
Feb 27 21:33:20 linux-123t xinetd[5417]: 5417 {init_services} no services. Exiting...


大家帮忙看看是什么毛病？不知道还需要提供什么信息？？

有那位可以指点一二呀！

搞定了在/var/run/中touch xinetd.init.pid 文件后，service xinetd restart成功了。现在打开了声音驱动，用alt+tab切换窗口不死机了。
不过原理还是不明白啊！！
没有那位可以指点一下吗？
被迫要搞lfs,看来不真正明白linux的原理是到处碰壁啊！！