Lehren Bulletin: Aishwarya & Aaradhya Bachchan spotted arriving in Surat; Film-maker Karan Johar threatened; Prakash Jha to make film on Asaram Bapu Rape Case; Jailed Bollywood actor Sanjay Dutt to perform in a fund raising event; Karisma Kapoor wants to do an item number and more hot news