Internet broadband speeds affected for Bharti Airtel, Tata Comms and state-owned BSNL and MTNL in March 2013

If you have also noticed slow speeds on your broadband recently (since 26 Mar 2013) it could be because of the undersea cable sabotage at Egypt.

The following link in economic times has more details:

Sabotage of undersea cables to slow down internet speed for 30 days