打开eclipse提示：“Failed to initialize Monitor Threa...

今天突然遇到这个问题，很奇怪，上周五还好好的，周末没有打开过eclipse。

百度了一下，答案都千篇一概，提示关掉防火墙，重启adb，可是我试了，对我都没有效果。
后来在http://stackoverflow.com上面找到了这个问题，按照建议作，果真好了。

疑问：
虽然暂时没有问题了，可是我仍是不明白为何会这样，期待有经验的的高手们路过的时候给点参考。

下面是http://stackoverflow.com上的问题和解决方法，可能不必定能解决全部的该类问题，可是贴出来，但愿有点帮助。

问题：

I have a problem, when I want to start developing applications for android, I did everything like in manualhere but after installing ADT Plugin in Eclipse I am still getting this error :

[2011-12-29 14:34:56 - ddms] Failed to initialize Monitor Thread: Unable to establish loopback connection

then, if I try to run an application this appear :

[2011-12-29 14:41:42 - TestApp] ------------------------------ [2011-12-29 14:41:42 - TestApp] Android Launch! [2011-12-29 14:41:42 - TestApp] Connection with adb was interrupted. [2011-12-29 14:41:42 - TestApp] 0 attempts have been made to reconnect. [2011-12-29 14:41:42 - TestApp] You may want to manually restart adb from the Devices view.

解决方法：

No need to turn off tredo interface: simply add -Djava.net.preferIPv4Stack=true ineclipse.ini:

 openFile -vmargs -Djava.net.preferIPv4Stack=true