Ruby plugin: debug in RSpec 2.8.0 don't work

Hello
I try to run debug in RSpec, but ruby plugin ignore my breakpoints. :(
I use RSpec 2.8.0 and last IDEA 11.0.2 with last RubyPlugin .
In rails debug work OK.

----

My env:
rake about
About your application's environment
Ruby version              1.9.3 (x86_64-linux)
RubyGems version          1.8.15
Rack version              1.4
Rails version             3.2.1
JavaScript Runtime        therubyracer (V8)
Active Record version     3.2.1
Action Pack version       3.2.1
Active Resource version   3.2.1
Action Mailer version     3.2.1
Active Support version    3.2.1
Middleware                ActionDispatch::Static, Rack::Lock, #<ActiveSupport::Cache::Strategy::LocalCache::Middleware:0x00000004366268>, Rack::Runtime, Rack::MethodOverride, ActionDispatch::RequestId, Rails::Rack::Logger, ActionDispatch::ShowExceptions, ActionDispatch::DebugExceptions, ActionDispatch::RemoteIp, ActionDispatch::Reloader, ActionDispatch::Callbacks, ActiveRecord::ConnectionAdapters::ConnectionManagement, ActiveRecord::QueryCache, ActionDispatch::Cookies, ActionDispatch::Session::CookieStore, ActionDispatch::Flash, ActionDispatch::ParamsParser, ActionDispatch::Head, Rack::ConditionalGet, Rack::ETag, ActionDispatch::BestStandardsSupport
Application root          /home/johnbat26/projects/idea_projects/sample_app
Environment               development
Database adapter          sqlite3
Database schema version   20120131032815