RPT-US STOCKS-Wall St edges down weighed by energy, Palm tumbles

                                
 (Repeats last stock market report for additional readers, with
no changes to headline or text)
  * Euro falls vs USD, greenback pressures commodity prices
                                
 * Palm tumbles 18 pct after revenue warning
                                
 * Boeing accelerating production, shares up 2 pct
                                
 * Dow off 0.3 pct; S&P 500 off 0.4 pct; Nasdaq off 0.6 pct
                                
 * For up-to-the-minute market news, click [STXNEWS/US]
  (Updates to mid-morning trading)
                                
 By Rodrigo Campos
                                
 NEW YORK, March 19 (Reuters) - Wall Street edged lower on
Friday, weighed down by energy shares as crude oil prices
tumbled under pressure from a rising U.S. dollar.
                                
 Renewed worries about Greece's debt problems sent the euro
to a more than two-week low against the greenback and pressured
oil and other commodity prices. Crude <CLc1> lost almost 2
percent, and the Reuters/Jefferies commodities index <.CRB>
fell 1 percent.
                                
 "The dollar is very strong this morning, and that's
weighing on commodity-related stocks and companies that derive
a large amount of sales from overseas," said Michael Sheldon,
chief market strategist at RDM Financial in Westport,
Connecticut.
                                
 The Dow Jones industrial average <.DJI> dropped 26.60
points, or 0.25 percent, to 10,752.57. The Standard & Poor's
500 Index <.SPX> fell 4.78 points, or 0.41 percent, to
1,161.05. The Nasdaq Composite Index <.IXIC> lost 15.13 points,
or 0.63 percent, to 2,376.15.
                                
 Palm Inc <PALM.O> tumbled 18.9 percent to $4.58 one day
after it warned that quarterly revenues would be far below
expectations. For details see [ID:nN19134642]
                                
 Boeing Co <BA.N> rose 1.2 percent to $71.73, limiting
losses on the Dow industrials, after it said it will move up
production for both its 777 and 747 airliners. [ID:nN19126100]
                                
 Health insurer Aetna Inc <AET.N> rose nearly 2 percent to
$33.87 after it forecast first-quarter earnings beating Wall
Street predictions, but held to its previous projection for
full-year profit. An index of health insurer stocks <.HMO> rose
1.6 percent. For details see [ID:nN19244950].
                                
 A looming U.S. Congressional vote to overhaul the U.S.
healthcare system will keep health-sector stocks in focus.
[ID:nN18229261]
                                
 The European Union's monetary affairs chief urged the
bloc's leaders to agree on a standby aid package for Greece
next week, but investors fear German reluctance could hinder
the effort. [ID:nLDE62I0YK]
                                
 Volume has been thin during the week and volatility has
dropped considerably, with the CBOE Volatility Index <.VIX>
down roughly 5 percent this week and hitting its lowest mark
since May 2008.
                                
 Friday marks the second day of a convergence known as
quadruple witching, when four types of options and futures
contracts expire, possibly triggering volatility and higher
volumes.
  (Additional reporting by Leah Schnurr; editing by Jeffrey
Benkoe)