Node.js:错误:403状态码下载

我试图在Nodejs中安装一些模块，使用NPM，但在某些情况下安装不继续，并返回一个错误:

Error: 403 status code downloading tarball

当我试图安装node-canvas时，我又遇到了这个问题:

D:'server'node_modules'canvas'node_modules'canvas>node "C:'Program Files'nodejs'node_modules'npm'bin'node-gyp-bin''..'..'node_modules'node-gyp'bin'node-gyp.js" rebuild
gyp http GET http://nodejs.org/dist/v0.8.3/node-v0.8.3.tar.gz
gyp http 403 http://nodejs.org/dist/v0.8.3/node-v0.8.3.tar.gz
gyp WARN install got an error, rolling back install
gyp ERR! rebuild error Error: 403 status code downloading tarball
gyp ERR! rebuild error     at Request.async (C:'Program Files'nodejs'node_modules'npm'node_modules'node-gyp'lib'install.js:215:14)
gyp ERR! rebuild error     at Request.EventEmitter.emit (events.js:115:20)
gyp ERR! rebuild error     at ClientRequest.<anonymous> (C:'Program Files'nodejs'node_modules'npm'node_modules'request'main.js:521:12)
gyp ERR! rebuild error     at ClientRequest.g (events.js:185:14)
gyp ERR! rebuild error     at ClientRequest.EventEmitter.emit (events.js:88:17)
gyp ERR! rebuild error     at HTTPParser.parserOnIncomingClient (http.js:1445:7)
gyp ERR! rebuild error     at HTTPParser.parserOnHeadersComplete [as onHeadersComplete] (http.js:111:23)
gyp ERR! rebuild error     at Socket.socketOnData (http.js:1356:20)
gyp ERR! rebuild error     at TCP.onread (net.js:404:27)
gyp ERR! not ok
canvas@1.0.2 node_modules'canvas

我用的是Windows 7 64xNodejs 0.8.3

这个错误可能是什么?tarball是什么?