Redmine

Hello! I have problems with unicode letters. E.g, when I create new issue or editing project name and I put russian characters into the field it puts not that I really want.
When I add item manually in PhpMyAdmin it displays '?' at redmine site although it shows russian characters at database.
If I add item at redmine site it puts into the database something strange.
I use MySQL server. Encoding are set to utf8_general_ci at database and at database.yml it's utf8. All tables and columns also have utf8 encoding.
I know that there are a lot of guides how to solve this problem but they can't help me.
Thank you