最近网络老是断线，经查看屏幕出现一大串的错误信息，

#irq 169 nobody card

...................................

.................

后来上网搜索发现有很多都有出现这个问题，经过多次实验，现贴出解决方法：

[root@mail ~]# vi /boot/grub/menu.lst

# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:  You have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /boot/, eg.
#          root (hd0,0)
#          kernel /vmlinuz-version ro root=/dev/sda5
#          initrd /initrd-version.img
#boot=/dev/sda
default=5
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title htsprings Linux X86_64 (2.6.18-238.12.1.el5)
        root (hd0,0)
        kernel /vmlinuz-2.6.18-238.12.1.el5 ro root=LABEL=/ htsprings acpi=noirq irqpoll
        initrd /initrd-2.6.18-238.12.1.el5.img

加入上面红色部分内容，之后重启，没有出现断线的情况。