The Sensex is now down 448 points at 12,535.Wipro and ICICI Bank have shed 4.7% each to Rs 555 and Rs 836, respectively. Satyam, ITC, Infosys, BHEL and Bharti Airtel plunged around 4% each to Rs 433, Rs 143, Rs 2,024, Rs 2,036 and Rs 736, respectively.Reliance Communications has dropped 3.6% to Rs 402. Tata Motors, ONGC, TCS, Hero Honda, Tata Steel and HDFC have slipped over 3% each.Out of 2,520 stocks traded so far, 1,760 have declined, 705 have advanced and 55 are unchanged.