Just also to mention that - The OS is ubuntu 10.10 Maverick, and the ruby version is ruby 1.8.7 (2010-06-23 patchlevel 299) [i686-linux] (`aptitude install -y ruby`) I expect this to be a bug in Ruby. Because theres no username associated with the UID 501: root@vagrant-ubuntu-maverick:/vagrant# irb irb(main):001:0> require 'etc' => true irb(main):003:0> Etc.getpwuid 501 ArgumentError: can't find user for 501 from (irb):3:in `getpwuid' from (irb):3 from :0 irb(main):004:0> What do you think? dreamcat4 dreamcat4 / gmail.com -- Posted via http://www.ruby-forum.com/.