Rails/Rack version issue

I am running Fedora 12 with Rails 2.3.4 installed. Everything was working fine, then last night I got an update from yum for Rack 1.1. After installing that, my working rails apps failed to load. Creating a new test app yielded: /usr/lib/ruby/site_ruby/1.8/rubygems.rb:827:in `report_activate_error': RubyGem version error: rack(1.1.0 not ~> 1.0.0) (Gem::LoadError) Has anyone else hit this issue? If more detail is needed, let me know. Thanks, -j