Renewed concerns about risky European bank debt sent the markets down during the midday with the Dow falling 80 points to 10,368.

The Food and Drug Adminstration placed two of Idenix Pharmaceuticals Inc.'s (Nasdaq: IDIX) hepatitis C drugs on hold citing safety concerns. Shares of the biopharmaceutical plummeted $2.86 to $3.13....

Barclays Capital analyst C. J. Muse downgraded Brooks Automation Inc. (Nasdaq: BRKS) citing weak industry trends sending the stock price down 82 cents to $5.87....

China Sky One Medical Inc. (Nasdaq: CSKI) cut its full year guidance on Friday after market close citing the termination of relationships with several major distributors. The stock price plummeted $2.90 to $6.79....

U. S. markets are closed in observance of the Labor Day holiday.

SAN FRANCISCO (Reuters) - Hewlett-Packard Co sued former Chief Executive Mark Hurd and asked a court to block him from joining Oracle Corp, saying his hiring by the rival technology firm puts HP's trade secrets "in peril."

TORONTO/SINGAPORE (Reuters) - China's state-owned Sinochem Corp has invited Temasek, the Singapore sovereign wealth fund, to join a consortium that may bid for Canada's Potash Corp , the world's largest fertilizer supplier, sources with knowledge of the matter said on Tuesday.

NEW YORK (Reuters) - U.S. regulators are probing certain practices around "quote stuffing," where large numbers of rapid-fire stock orders are placed and canceled almost immediately, Securities and Exchange Commission Chairman Mary Schapiro said on Tuesday.

NEW YORK (Reuters) - The top U.S. securities regulator said on Tuesday that the follow-up report on what might have caused the May "flash crash" is expected by the end of September.

CHICAGO (Reuters) - The Food and Drug Administration has warned beverage makers Dr Pepper Snapple Group Inc and Unilever for making improper statements regarding green tea on product labels and web sites.

CHICAGO (Reuters) - Chicago Mayor Richard M. Daley said on Tuesday he will not run for reelection to a seventh term in February, saying simply that it was the right time for him to leave.

NEW YORK (Reuters) - A U.S. Appeals Court on Tuesday declined to consider a deeper legal review of patent settlements by drug companies that pay rivals to delay production of generic drugs, setting the stage for the Supreme Court or Congress to address the matter.

NEW YORK (Reuters) - Tropical Storm Hermine barely maintained its tropical storm status on Tuesday as 40 mile per hour winds kept lashing south Texas and the storm moved further inland about 15 miles south-southeast of San Antonio, Texas, the National Hurricane Center said.

NEW YORK (Reuters) - Families of September 11 victims are arguing whether to call a truce on the anniversary of the 2001 attacks on the United States as debate rages over plans for a Muslim center near the World Trade Center site.

WASHINGTON (Reuters) - Tax cuts should be extended for all Americans to help spur the economy, but even the middle-class cuts should end in two years, former U.S. budget director Peter Orszag said on Tuesday.

WASHINGTON (Reuters) - A U.S. government team will travel to Seoul, Tokyo and Beijing next week to discuss North Korea but has no plans to visit the poor, isolated state or meet its officials, the State Department said Tuesday.

WASHINGTON (Reuters) - The United States does not plan to contribute to a NATO request for 2,000 troops for the Afghan war, the Pentagon said on Tuesday, even as the head of the alliance held out the possibility of U.S. participation.

BAGHDAD (Reuters) - Two U.S. soldiers were killed and nine others wounded in an attack inside an Iraqi army compound Tuesday, the U.S. military said.

MADRID (Reuters) - Spain's Prime Minister Jose Luis Rodriguez Zapatero said Tuesday ETA had to lay down its arms forever, after the Basque separatist group declared a ceasefire.

AMSTERDAM (Reuters) - Three right-leaning Dutch parties which broke off talks to form a new government last week said Tuesday they were ready to resume negotiations, after a dissident from one of the parties quit parliament.