> To make matters worse, each package gets its own node_modules directory. Do a grep for 'async' in your node_modules. Mine contains ~20 instances of it. Some o

> To make matters worse, each package gets its own node_modules directory. Do a grep for 'async' in your node_modules. Mine contains ~20 instances of it. Some of those, probably, are the exact same version. Upgrade to npm v3, that should these problems.