Ubuntu的npm安装无法获取

当我尝试npm install一个特定的包时，我收到一个错误。

这些命令工作正常：

 sudo apt-get update sudo apt-get install nodejs sudo apt-get install npm 

在这一点上，安装npm -v ，因为npm -v正常工作。

但是当我试图使用 npm来安装一个包时，我得到一个错误：

 sudo npm install -g grunt-cli 

 npm ERR! Error: failed to fetch from registry: grunt-cli npm ERR! at /usr/share/npm/lib/utils/npm-registry-client/get.js:139:12 npm ERR! at cb (/usr/share/npm/lib/utils/npm-registry-client/request.js:31:9) npm ERR! at Request._callback (/usr/share/npm/lib/utils/npm-registry-client/request.js:136:18) npm ERR! at Request.callback (/usr/lib/nodejs/request/main.js:119:22) npm ERR! at Request.<anonymous> (/usr/lib/nodejs/request/main.js:212:58) npm ERR! at Request.emit (events.js:88:20) npm ERR! at ClientRequest.<anonymous> (/usr/lib/nodejs/request/main.js:412:12) npm ERR! at ClientRequest.emit (events.js:67:17) npm ERR! at HTTPParser.onIncoming (http.js:1261:11) npm ERR! at HTTPParser.onHeadersComplete (http.js:102:31) npm ERR! You may report this log at: npm ERR! <http://bugs.debian.org/npm> npm ERR! or use npm ERR! reportbug --attach /home/jado/sourceFromGit/JADO-FROM-GIT/npm-debug.log npm npm ERR! npm ERR! System Linux 3.2.0-35-generic npm ERR! command "node" "/usr/bin/npm" "install" "-g" "grunt-cli" npm ERR! cwd /home/jado/sourceFromGit/JADO-FROM-GIT npm ERR! node -v v0.6.12 npm ERR! npm -v 1.1.4 npm ERR! message failed to fetch from registry: grunt-cli npm ERR! npm ERR! Additional logging details can be found in: npm ERR! /home/jado/sourceFromGit/JADO-FROM-GIT/npm-debug.log npm not ok