Redmine

Hello Redmine Users,
maybe someone has the same problem like mine and could help me...
After my installation of all the requirements for redmine (stable 1.0.1) i tried it out with the WEBrick web server on port 3000 and all its Ok. I can use redmine.
After I installed the passenger module (Phusion Passenger version 3.0.2) and configure the apache2 at my debian lenny server, I'll get an error from passenger with rack:
Error message: RubyGem version error: rack(1.2.1 not ~> 1.0.1)

I tried all the options with the rack gems that I find in the forums, but nothing happens with this error.
Some generated posts from the backtrace are:

0 /var/lib/redmine/vendor/rails/railties/lib/initializer.rb 271 in `require_frameworks'
1 /var/lib/redmine/vendor/rails/railties/lib/initializer.rb 134 in `process'
2 /var/lib/redmine/vendor/rails/railties/lib/initializer.rb 113 in `send'
3 /var/lib/redmine/vendor/rails/railties/lib/initializer.rb 113 in `run'
4 /var/lib/redmine/config/environment.rb 20
5 /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb 31 in `gem_original_require'
6 /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb 31 in `require'

Thankyou for reading and maybe thankyou for a helpful answer

greetz uli