Redmine

Hello community!

I'm taking my first steps with Redmine and so far I love it! Way to go! There is only one thing bothering me so far: How can I enable "I don't want to be notified of changes that I make myself" for all users by default?

My system is Debian Squeeze with PostgreSQL 8.4.11:

# RAILS_ENV="production" script/about 

Environment:
  Redmine version                          2.0.1.stable
  Ruby version                             1.8.7 (x86_64-linux)
  Rails version                            3.2.3
  Environment                              production
  Database adapter                         PostgreSQL
Redmine plugins:
  no plugin installed

Thanks in advance!