suddendy it stopped working and throws the following errors:
StandardError (MAC address could not be autodetected. Set the MAC address manually.):
/usr/local/lib/ruby/gems/1.8/gems/uuidtools-1.0.3/lib/uuidtools.rb:241:in `timestamp_create'
/usr/local/lib/ruby/gems/1.8/gems/uuidtools-1.0.3/lib/uuidtools.rb:229:in `synchronize'
/usr/local/lib/ruby/gems/1.8/gems/uuidtools-1.0.3/lib/uuidtools.rb:229:in `timestamp_create'
/vendor/plugins/shared_models/lib/user.rb:202:in `set_token'
any ideas how to fix that and what may have caused it?