今天还没到公司，就有同事打电话给我说OA系统上不去了，现象是客户端无法访问OA服务器,ping了服务器的IP地址也是不通的。这个问题上上周才第一次出现，因为OA停了影响太大，当时马上果断重启服务器后解决，当时忙其它事也没去细查原因了。没想到这么快又出现了，还是让同事到机房直接登录到服务器上把服务器给重启后解决了。到公司后我查看操作系统的日志，发现报了一堆如下的错误
Aug 24 04:03:01 oaserver syslogd 1.4.1: restart.
Aug 25 06:39:39 oaserver kernel: NETDEV WATCHDOG: eth0: transmit timed out
Aug 25 06:39:39 oaserver kernel: netxen_nic eth0: transmit timeout, resetting.
Aug 25 06:39:43 oaserver kernel: NETDEV WATCHDOG: eth0: transmit timed out
Aug 25 06:39:43 oaserver kernel: netxen_nic eth0: transmit timeout, resetting.
Aug 25 06:39:47 oaserver kernel: NETDEV WATCHDOG: eth0: transmit timed out
Aug 25 06:39:47 oaserver kernel: netxen_nic eth0: transmit timeout, resetting.
Aug 25 06:39:51 oaserver kernel: NETDEV WATCHDOG: eth0: transmit timed out
Aug 25 06:39:51 oaserver kernel: netxen_nic eth0: transmit timeout, resetting.
。。。。。。
Aug 25 08:29:35 oaserver gconfd (root-8648): 已接收到信号 15，正在干净地关闭
Aug 25 08:29:35 oaserver gconfd (root-8648): 退出
Aug 25 08:29:35 oaserver kernel: NETDEV WATCHDOG: eth0: transmit timed out
Aug 25 08:29:35 oaserver kernel: netxen_nic eth0: transmit timeout, resetting.
Aug 25 08:29:36 oaserver pcscd: winscard.c:304:SCardConnect() Reader E-Gate 0 0 Not Found
Aug 25 08:29:36 oaserver kernel: gdm-rh-security[7225]: segfault at 0000000000000000 rip 00002ac82c1f119c rsp 0000000041e8eeb0 error 4
Aug 25 08:29:36 oaserver smartd[7016]: smartd received signal 15: Terminated
Aug 25 08:29:36 oaserver smartd[7016]: smartd is exiting (exit status 0)
Aug 25 08:29:36 oaserver avahi-daemon[6822]: Got SIGTERM, quitting.
Aug 25 08:29:36 oaserver avahi-daemon[6822]: Leaving mDNS multicast group on interface eth0.IPv6 with address fe80::6ab5:99ff:feb7:bd3c.
Aug 25 08:29:36 oaserver avahi-daemon[6822]: Leaving mDNS multicast group on interface eth0.IPv4 with address 10.100.100.23.
Aug 25 08:29:38 oaserver xinetd[6657]: Exiting...
Aug 25 08:29:39 oaserver kernel: NETDEV WATCHDOG: eth0: transmit timed out
Aug 25 08:29:39 oaserver kernel: netxen_nic eth0: transmit timeout, resetting.
Aug 25 08:29:41 oaserver hcid[6027]: Got disconnected from the system message bus
Aug 25 08:29:41 oaserver nm-system-settings: disconnected from the system bus, exiting.
Aug 25 08:29:41 oaserver kernel: nm-system-setti[8885]: segfault at 0000000000000000 rip 0000000000000000 rsp 00007fff1ce380c8 error 14
Aug 25 08:29:41 oaserver gconfd (root-14420): 正在启动(版本 2.14.0)，pid 14420 用户“root”
Aug 25 08:29:41 oaserver gconfd (root-14420): 地址“xml:readonly:/etc/gconf/gconf.xml.mandatory”解析为位于 0 的只读配置源
Aug 25 08:29:41 oaserver gconfd (root-14420): 地址“xml:readwrite:/root/.gconf”解析为位于 1 的可写入配置源
Aug 25 08:29:41 oaserver gconfd (root-14420): 地址“xml:readonly:/etc/gconf/gconf.xml.defaults”解析为位于 2 的只读配置源
Aug 25 08:29:42 oaserver rpc.statd[5973]: Caught signal 15, un-registering and exiting.
Aug 25 08:29:42 oaserver auditd[5800]: The audit daemon is exiting.
Aug 25 08:29:42 oaserver kernel: audit(1408926582.446:16375): audit_pid=0 old=5800 by auid=4294967295
Aug 25 08:29:42 oaserver pcscd: pcscdaemon.c:572:signal_trap() Preparing for suicide
Aug 25 08:29:42 oaserver pcscd: hotplug_libusb.c:376:HPRescanUsbBus() Hotplug stopped
Aug 25 08:29:43 oaserver pcscd: readerfactory.c:1379:RFCleanupReaders() entering cleaning function
Aug 25 08:29:43 oaserver pcscd: pcscdaemon.c:532:at_exit() cleaning /var/run
Aug 25 08:29:43 oaserver kernel: Kernel logging (proc) stopped.
Aug 25 08:29:43 oaserver kernel: Kernel log daemon terminating.
Aug 25 08:29:44 oaserver exiting on signal 15
Aug 25 08:33:48 oaserver syslogd 1.4.1: restart.
Aug 25 08:33:48 oaserver kernel: klogd 1.4.1, log source = /proc/kmsg started.
看上去好像是网卡出了什么问题，请问有人知道这是什么情况下会出现呢，又要怎么解决呢
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