尝试安装Socket.IO时NPM出错

Question

所以我正在尝试在我的机器上安装socket.io，而且我遇到了这个小宝石：

[ME ~]$ sudo npm install socket.io
npm ERR! Error: ENOTFOUND, Domain name not found
npm ERR!     at IOWatcher.callback (dns.js:74:15)
npm ERR! Report this *entire* log at:
npm ERR!     <http://github.com/isaacs/npm/issues>
npm ERR! or email it to:
npm ERR!     <npm-@googlegroups.com>
npm ERR!
npm ERR! System Linux 2.6.35.13-92.fc14.x86_64
npm ERR! command "node" "/usr/bin/npm" "install" "socket.io"
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR!     /home/ME/npm-debug.log
npm not ok
[ME ~]$

我无法判断它是否与我的防火墙，我安装的npm或其他一些此类问题有关......有没有人遇到过类似的问题？