npm detects higher version of node

gistfile1.sh

%: npm install -g express
npm ERR! Unsupported
npm ERR! Not compatible with your version of node/npm: express@2.4.6
npm ERR! Required: {"node":">= 0.4.1 < 0.5.0"}
npm ERR! Actual:   {"npm":"1.0.30","node":"v0.5.5"}
npm ERR! 
npm ERR! System Linux 2.6.40.3-0.fc15.x86_64
npm ERR! command "node" "/home/et/local/bin/npm" "install" "-g" "express"
npm ERR! cwd /home/et/code/node
npm ERR! node -v v0.5.5
npm ERR! npm -v 1.0.30
npm ERR! 
npm ERR! Additional logging details can be found in:
npm ERR!     /home/et/code/node/npm-debug.log
npm not ok

%:  npm -v
1.0.30

%:  node -v
v0.4.12