说明：这篇文章只适用于人物未知目标、显示不出画面的呢问题，
在暴雪的Support上就写明了相关的问题
[ abm..forums.worldofwarcraft.co ... mp;tmp=1#post274985 ] 里面很明确有段话
Network card related - Some network adapters may require a driver update or duplex change to stabilize connectivity. Some models include; Realtek RTL 8139/69 series, Intel Pro series, Broadcom 440 series, Marvell Yukon Series, Via Rhine series, and the nVidia nForce series. Please visit the link below for assistance in making these changes.
如果你的网卡是Realtek RTL 8139/69系列、Intel Pro系列、Broadcom 440系列、Marvell Yukon系列、Via Rhine系列、nVidia nForce系列，那么恭喜你，你很有可能出这种问题。当然这也和你的网络情况有关，我两个朋友的笔记本一抹一样，都Intel Pro 100的网卡，但其中一个有问题，一个没问题，究其原应应该就是和网络有关（一个网通、一个ADSL）。也有人说服务人多地时候容易出，这也有可能，毕竟服务器忙得时候出错的几率大（看下面党ecksum offload选项），但到底是什么原因，不要问我，TCP开了那些Option，我光抓包不是那么容易能分析出来的（至少会很累），暴雪，就这点来说，你太让大家失望了，这么多游戏没问题，就你出问题，这几块可是主流网卡阿？
解决方法也说了
There are several drivers that, if out-of-date, could cause issues for broadband users. If you need more help in locating drivers for your hardware or finding the settings listed, please contact the hardware manufacturer or a qualified technician. If you access the internet through an external broadband modem, be sure you have the latest firmware and drivers available for your modem. If your computer connects to the modem via USB, be sure you have the latest drivers for your motherboard or your USB PCI card. If your computer onnects to the modem via Ethernet, be sure that your network card has the latest drivers installed. if you have a power management tab in our network card properties, click it and unselect the "allow the computer to turn off this device to save power" if selected. Checksum offloading. To turn the checksum offloading off go to start > control panel > click network connections > right click on your active etwork connection profile and select properties > then click the configure utton at the top > under 'CHECKSUM OFFLOAD' (if listed) change it to 'DISABLED'. This will disconnect you from the internet for a brief moment. You should automatically reconnect, if not restart your machine.
You can also try changing the Speed/Duplex to Force 100 Full Duplex. This has shown to fix these types of issues as well. To
do this, go into your computer properties, and then into your device manager. Locate your network card, and go into the
properties for it. click on the advanced tab, and you should see a list of items. One of them should be Speed/duplex settings.
Change this to Force base 100 Full duplex. If you have an older router or hub you may need to use base 10 full duplex.
1、在网卡设置中，去掉"allow the computer to turn off this device to save power"（很难想象这个居然会出问题，难道在游戏过程中，网卡也会进入节电状态？不过我没看文章之前，看网卡设置的时候居然第一直觉也是他，改了之后确实好的多了）
2、在网卡的高级选项之中，将"Checksum offloading"选为Disable。（看样子这才是关键所在，可能是由于网卡的自动校验而导致一旦有一点问题，后续的包便全部不处理而出现假掉线----因为你的动作服务器完全能受的到，而服务器忙得话，出错的几率就大）
3、将Speed/Duplex模式改称100 Full Duplex或10 full duplex。（估计暴雪也不得以而为之了，一般来说，这个是默认方式，除非你修改了你的路由器和交换机运行模式）
另外：
You may also want to delete your entire WDB folder(located in the World of Warcraft directory) and test the game. The cached files in this folder are occasionally known to cause this issue, and their deletion may immediately fix the problem.
建议删除WDB，这些cache文件可能会导致出问题。
最后一段话：
Some of the communication problems that create this situation include interference from other programs, firewalls, protective software like BlackICE, and routers. Simplifying your connection temporarily removing your router, for example) may reveal the source of the problem. However, a significant portion of the time, old network card drivers are to blame. This issue is usually resolved after updating their card's drivers. However, some have only resolved it using older drivers. You may need to experiment with your card and its settings to eliminate the problem.
暴雪建议你多试几个网卡驱动版本试试。
如果你都这么做了，还是不行怎么办？别问我，我也不知道。至少我那个朋友（Intel Pro 100）就始终不能在驱动里找到"Checksum offloading"这个选项，而问题也一直不能解决。暴雪自己也都说了----This issue is usually resolved after updating their card's drivers. However, some have only resolved it using older drivers. You may need to experiment with your card and its settings to eliminate the problem.
再不行，换块网卡试试吧！
