[otrs] problems with utf-8

Hi all, otrs (2.0.4.-01), default charset utf-8, every mail with the charset=ISO-8859-2 in the header make this error:

./PostMasterPOP3.pl Message 1/21 (otrs@mx.mall.cz) Wide character in subroutine entry at /opt/otrs/Kernel/System/Ticket/ArticleStorageDB.pm line 249. or this error: OTRS-PM3-10[13071]: [Error][Kernel::System::Ticket::Article::ArticleCreate][Line:138]: ERROR: invalid byte sequence for encoding "UTF8": 0xed7374 , SQL: 'INSERT INTO article (ticket_id, article_type_id, article_sender_type_id, a_from, a_reply_to, a_to, a_cc, a_subject, a_message_id, a_body, a_content_type, content_path, valid_id, incoming_time, create_time, create_by, change_time, change_by) VALUES (4912, 1, 3, '"Petr Burcal - Internet Mall" ', '', '"''IT oddeleni''" ', 'FW: Pocitac', '<038601c6b70e$942314b0$0219a8c0@PetrBurcal>', ?, 'text/plain\; charset="iso-8859-2"', ?, 1, 1154673511, current_timestamp, 1, current_timestamp, 1)'

this is not related to msg with attachment any idea? Daniel Vesely