Redmine

Hello

After migrating from 1.3.2 to 2.1.2 I see that problem:
Can't load a page of redmine, because of "Сyclic recursion redirects".

Here is a LOG of attempt right after server start:

Started GET "/projects/igp" for 192.168.5.2 at Thu Oct 18 17:19:07 +0300 2012
Processing by ProjectsController#show as HTML
  Parameters: {"id"=>"igp"}
  Current user: anonymous
Redirected to http://192.168.5.12:3000/login?back_url=http%3A%2F%2F192.168.5.12%3A3000%2Fprojects%2Figp
Filter chain halted as :check_if_login_required rendered or redirected
Completed 302 Found in 212ms (ActiveRecord: 12.8ms)

Started GET "/login?back_url=http%3A%2F%2F192.168.5.12%3A3000%2Fprojects%2Figp" for 192.168.5.2 at Thu Oct 18 17:19:08 +0300 2012
Processing by AccountController#login as HTML
  Parameters: {"back_url"=>"http://192.168.5.12:3000/projects/igp"}
  Current user: anonymous
Redirected to http://192.168.5.12:3000/login?back_url=http%3A%2F%2F192.168.5.12%3A3000%2Flogin%3Fback_url%3Dhttp%253A%252F%252F192.168.5.12%253A3000%252Fprojects%252Figp
Filter chain halted as :check_if_login_required rendered or redirected
Completed 302 Found in 6ms (ActiveRecord: 1.0ms)

Started GET "/login?back_url=http%3A%2F%2F192.168.5.12%3A3000%2Flogin%3Fback_url%3Dhttp%253A%252F%252F192.168.5.12%253A3000%252Fprojects%252Figp" for 192.168.5.2 at Thu Oct 18 17:19:08 +0300 2012
Processing by AccountController#login as HTML
  Parameters: {"back_url"=>"http://192.168.5.12:3000/login?back_url=http%3A%2F%2F192.168.5.12%3A3000%2Fprojects%2Figp"}
  Current user: anonymous
Redirected to http://192.168.5.12:3000/login?back_url=http%3A%2F%2F192.168.5.12%3A3000%2Flogin%3Fback_url%3Dhttp%253A%252F%252F192.168.5.12%253A3000%252Flogin%253Fback_url%253Dhttp%25253A%25252F%25252F192.168.5.12%25253A3000%25252Fprojects%25252Figp
Filter chain halted as :check_if_login_required rendered or redirected
Completed 302 Found in 5ms (ActiveRecord: 0.9ms)

Please help!