Hello SamG, > I do this on PowerPC.. > > >>> import os > >>> os.listdir('/usr/bin') > > And endup getting this ... > > OSError: [Error 5] Input/output error:/usr/bin What happens when you run "ls /usr/bin" in the terminal? HTH, -- Miki <miki.tebeka at gmail.com> http://pythonwise.blogspot.com