Redmine

Hello everybody,

I have updated to the latest version of Redmine, and I am experiencing very high CPU load on my server.
See attached screenshot.

I am not sure what causes this, but it seems that something is hanging. I am not a ruby expert... so I don't even know where to look first.

Maybe this info helps:

:/opt/redmine-2.3# bundle list
Gems included by the bundle:
  * actionmailer (3.2.13)
  * actionpack (3.2.13)
  * activemodel (3.2.13)
  * activerecord (3.2.13)
  * activeresource (3.2.13)
  * activesupport (3.2.13)
  * arel (3.0.3)
  * builder (3.0.0)
  * bundler (1.3.5)
  * capybara (2.0.3)
  * childprocess (0.3.9)
  * coderay (1.0.9)
  * erubis (2.7.0)
  * ffi (1.9.3)
  * hike (1.2.3)
  * i18n (0.6.1)
  * journey (1.0.4)
  * jquery-rails (2.0.3)
  * json (1.8.1)
  * mail (2.5.4)
  * metaclass (0.0.1)
  * mime-types (1.25.1)
  * mocha (0.13.3)
  * multi_json (1.8.2)
  * mysql2 (0.3.14)
  * net-ldap (0.3.1)
  * nokogiri (1.5.10)
  * polyglot (0.3.3)
  * rack (1.4.5)
  * rack-cache (1.2)
  * rack-openid (1.4.1)
  * rack-ssl (1.3.3)
  * rack-test (0.6.2)
  * rails (3.2.13)
  * railties (3.2.13)
  * rake (10.1.0)
  * rdoc (3.12.2)
  * rmagick (2.13.2)
  * ruby-openid (2.3.0)
  * rubyzip (0.9.9)
  * selenium-webdriver (2.35.1)
  * shoulda (3.3.2)
  * shoulda-context (1.0.2)
  * shoulda-matchers (1.4.1)
  * sprockets (2.2.2)
  * thor (0.18.1)
  * tilt (1.4.1)
  * treetop (1.4.15)
  * tzinfo (0.3.38)
  * websocket (1.0.7)
  * xpath (1.0.0)
  * yard (0.8.7.3)

Suggestions are welcome,
Andrei.