[Koha] Opac Login problem

Hi Friends, Our Koha 2.9 encountered a problem while while login to opac. It says that "Internal Server Error The server encountered an internal error or misconfiguration and was unable to complete your request." while trying to login opac using id and password. How can we solve it? Vimal Kumar Asst. Librarian Asian School of Business Technopark Trivandrum-695 581 http://www.asb.edu.in/vimal ---------------------------------------------------------------------- "I forget what I was taught. I only remember what I have learnt" -Patrick White