Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and

[aliumair]

I am getting following exception when Email is pop for creating new Tickets.


DBD::mysql::st execute failed: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation '=' at /opt/supportOTRS/Kernel/System/DB.pm line 553.
ERROR: OTRS-PostMasterMailbox.pl-10 Perl: 5.8.8 OS: linux Time: Mon Jun 10 05:00:04 2013

Message: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation '=', SQL: 'SELECT id FROM article WHERE ticket_id = ? AND a_message_id = ? AND a_from = ? AND a_subject = ? AND incoming_time = ? ORDER BY id DESC LIMIT 1'

Traceback (1518):
Module: Kernel::System::Ticket::Article::_ArticleGetId (v1.274) Line: 1887
Module: Kernel::System::Ticket::Article::ArticleCreate (v1.274) Line: 245
Module: Kernel::System::PostMaster::NewTicket::Run (v1.76) Line: 245
Module: Kernel::System::PostMaster::Run (v1.85) Line: 351
Module: Kernel::System::MailAccount::POP3S::_Fetch (v1.12) Line: 241
Module: Kernel::System::MailAccount::POP3S::Fetch (v1.12) Line: 106
Module: Kernel::System::MailAccount::MailAccountFetch (v1.16) Line: 386
Module: main::Fetch (v1.3) Line: 180
Module: /opt/supportOTRS/bin/otrs.PostMasterMailbox.pl (v1.3) Line: 93

ERROR: OTRS-PostMasterMailbox.pl-10 Perl: 5.8.8 OS: linux Time: Mon Jun 10 05:00:04 2013

Message: Can't get ArticleID from INSERT!

Traceback (1518):
Module: Kernel::System::Ticket::Article::ArticleCreate (v1.274) Line: 255
Module: Kernel::System::PostMaster::NewTicket::Run (v1.76) Line: 245
Module: Kernel::System::PostMaster::Run (v1.85) Line: 351
Module: Kernel::System::MailAccount::POP3S::_Fetch (v1.12) Line: 241
Module: Kernel::System::MailAccount::POP3S::Fetch (v1.12) Line: 106
Module: Kernel::System::MailAccount::MailAccountFetch (v1.16) Line: 386
Module: main::Fetch (v1.3) Line: 180
Module: /opt/supportOTRS/bin/otrs.PostMasterMailbox.pl (v1.3) Line: 93

ERROR: OTRS-PostMasterMailbox.pl-10 Perl: 5.8.8 OS: linux Time: Mon Jun 10 05:00:24 2013

i am getting this exception so frequent, please help me or suggest me this regard, Please help.

Regards
Ali