List of Values taking long time to populate in WEBI prompt

Hi All,

We are having some webi reports based on Universe who are created on top of SQL server 2005.

Reports are having around 10 prompts.

Problem is, when user selects the prompt to select prompt value , it takes around 25-30 sec to get list of values populated.

What should be done to shorten the time to retrieve List of Values.

BO Version : Business Objects 4.1 SP1                                                                                                                                                                                                                                

  Database: SQL Server 2005                    

Regards

Varjit