Auto complete Textbox binding very slowly...?

Hi,
in my sample project i am ajax autocomplete extender for autocomplete textbox. I am binding the EmployeeName from database in autocomplete textbox. I have lakhs of records in my table(emploee table).It takes nearly 10 secs for binding in textbox data every time. how can i reduce the time for data binding in textbox.
If any one know about this Reply me.

Regards
Nanda Kishore.CH .