When I try to make any change to a Queue I have an error message: 

Error: Need SalutationID!

ERROR: OTRS-CGI-10 Perl: 5.8.8 OS: linux Time: Tue May 11 11:32:42 2010

Message: Need SalutationID!

Traceback (6197): 
   Module: Kernel::System::Queue::QueueUpdate (v1.102) Line: 901
   Module: Kernel::Modules::AdminQueue::Run (v1.43) Line: 126
   Module: Kernel::System::Web::InterfaceAgent::Run (v1.34) Line: 824
   Module: /opt/otrs/bin/cgi-bin/index.pl (v1.87) Line: 47