Bloomberg | US STOCKS-Wall St flat as S&P stalls at key level, banks off Reuters The NYSEArca computer hardware index lost 1.5 percent. Fellow computer maker Hewlett-Packard Co is set to report earnings on Wednesday. The market expects a profit of 87 cents per share, down from $1.36 one year ago. According to Thomson Reuters data ... Wall Street flat after housing data; S&P near key level S&P fails to break key level US STOCKS-Banks sink on European economic worry |