The bear's back as the Dow falls 345

Stocks suffer their worst 1-day losses in about 2 months as economic fears take over Wall Street. Merrill Lynch is having problems unloading some troubled assets. Boeing faces a strike. Wal-Mart's August same-store sales are better than expected.

Services, productivity up but job market weak

BIDU 271.14 -22.11 -7.54%
POT 150.39 -5.07 -3.26%
GOOG 450.26 -14.15 -3.05%
FSLR 237.13 -10.01 -4.05%
ISRG 273.49 -16.95 -5.84%
MA 216.03 -13.60 -5.92%
SKF 118.90 +8.89 +8.08%