Ubuntu
adduser package

  1. Bug #432964
  2. Comment #13

Comment 13 for bug 432964

Revision history for this message
Milan Bouchet-Valat (nalimilan) wrote : Re: usermod fails: "cannot lock /etc/passwd"

Just an idea: do you happen to be using some strange file system on your root partition, or specific mount option? I don't know whether that could affect file locks, but...