npm ERR! error installing n@0.7.3

[merhawie]

npm http 200 https://registry.npmjs.org/n/-/n-0.7.3.tgz
npm ERR! Could not create /usr/local/lib/node_modules/___n.npm
npm ERR! error installing n@0.7.3
npm ERR! Error: EACCES, permission denied '/usr/local/lib/node_modules/___n.npm'
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 Darwin 12.0.0
npm ERR! command "node" "/usr/local/bin/npm" "install" "-g" "n"
npm ERR! cwd /Users/merhawie
npm ERR! node -v v0.6.7
npm ERR! npm -v 1.1.0-beta-10
npm ERR! path /usr/local/lib/node_modules/___n.npm
npm ERR! code EACCES
npm ERR! message EACCES, permission denied '/usr/local/lib/node_modules/___n.npm'
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR! /Users/merhawie/npm-debug.log
npm not ok