The Sensex is now down 280 points at 17,454.The NSE Nifty is down 65 points at 5,127.HDFC and Bajaj Auto have dropped 2.8% each to Rs 2,574 and Rs 2,344, respectively.ICICI Bank, Mahindra & Mahindra and Satyam have tumbled 2.5% each to Rs 1,114, Rs 625 and Rs 447, respectively.HDFC Bank and Infosys have slipped 2.3% each to Rs 1,507 and Rs 1,593, respectively.Reliance Energy, SBI and TCS are down 2% each at Rs 1,560, Rs 2,135 and Rs 900, respectively.Cipla has gained 1.7% at Rs 192, and Hindustan Unilever has moved up 1.4% to Rs 192.