US STOCKS-Palm lifts Nasdaq, but oil drags Dow down

* Palm shares jump 16 percent, says Pre demand strong

* Falling oil sinks energy shares

* Higher savings rate raises consumer spending worries

* Volume jumps late as Russell 3000 index reconstituted

* Dow off 0.4 pct, S&P off 0.2 pct, Nasdaq up 0.5 pct

* For up-to-the-minute market news click [STXNEWS/US]

(Updates close with late volume surge, volatility details)

By Edward Krudy