Redmine

I installed redmine 0.7 on linux

RAILS_ENV=production script/about
About your application's environment
Ruby version 1.8.6 (i686-linux)
RubyGems version 1.3.0
Rails version 2.0.2
Active Record version 2.0.2
Action Pack version 2.0.2
Active Resource version 2.0.2
Action Mailer version 2.0.2
Active Support version 2.0.2
Application root /redmine-0.7
Environment production
Database adapter mysql
Database schema version 92

All work well. Only right click context menu don't work. I checked on firefox 2.0.020 and opera 9.52. Why? How it fix?
On redmine.org the shortcut menu in firefox and opera works.