Installing Forever in Debian Lenny (5.0) via NPM - error

I'm trying to install forever via NPM, on Debian Lenny (5.0) but I am receiving the following error during installation, that starts with:

> node-waf configure build

npm ERR! TypeError: options.uid should be a number

I've tried Googling - but got nothing useful, except I stumbled across this pastebin page with the exact same error which some other poor soul was getting too.

Any Node/forever people out there know what might be going wrong?