Brace yourselves for more bank and market turmoil

It's going to be a bumpy day on Wall Street.

Lehman files for bankruptcy (BBC)

Wall Street crisis: investors dump shares after Lehman collapse (U.K. Guardian)-- "The London stockmarket nosedived this morning as traders dumped shares and piled into gold and government bonds, following the turmoil on Wall Street."

Global markets dive after Lehman declares bankruptcy (Times Online)

Stunned Merril and Lehman staff eye shifting landscape (Reuters)