Redmine

Hi there, I have a probleme with my redmine installation. Redmine 2.2.4, Ruby 1.9.3 and passenger. If i edit a wiki page with more than a specific volume of character i get a 500 error. Is this issue known?
Could it be this one?
http://www.redmine.org/boards/2/topics/36850

About your application's environment
Ruby version 1.9.3 (x86_64-linux)
RubyGems version 1.8.11
Rack version 1.4
Rails version 3.2.13
Active Record version 3.2.13
Action Pack version 3.2.13
Active Resource version 3.2.13
Action Mailer version 3.2.13
Active Support version 3.2.13
Middleware Rack::Cache, ActionDispatch::Static, Rack::Lock, #<ActiveSupport::Cache::Strategy::LocalCache::Middleware:0x0000000290b878>, Rack::Runtime, Rack::MethodOverride, ActionDispatch::RequestId, Rails::Rack::Logger, ActionDispatch::ShowExceptions, ActionDispatch::DebugExceptions, ActionDispatch::RemoteIp, ActionDispatch::Callbacks, ActiveRecord::ConnectionAdapters::ConnectionManagement, ActiveRecord::QueryCache, ActionDispatch::Cookies, ActionDispatch::Session::CookieStore, ActionDispatch::Flash, ActionDispatch::ParamsParser, ActionDispatch::Head, Rack::ConditionalGet, Rack::ETag, ActionDispatch::BestStandardsSupport, OpenIdAuthentication
Application root /var/www/virtual/foo/redmine
Environment production
Database adapter mysql2
Database schema version 20121026003537