Question : Public folder after Migration from Exchange 2003 to 2007

Kindly,  
          after I migrate from Exchange 2003 to Exchange 2007, I have problem with some users
that they still Reading public folder from old  exchange 2003 Servers ( I discovered the problem when i closed the Servers ).
how I change their settings to Read public folder from new Server.
Note:- Other users working fine with public folders

Answer : Public folder after Migration from Exchange 2003 to 2007

Go to the properties of the mailbox database and ensure that on the client settings tab,correct PF is listed