* Stocks weaken after initial euro zone rescue euphoria
* Euro falls on nagging worries over deficits
* Chinese inflation data fuels tightening fears
* Gold reaches 5-month high on safe-haven flows
By Daniel Bases
NEW YORK, May 11 (Reuters) - Investors took back Monday's gains, selling stocks and the euro, vacillating on bonds and pushing gold to a five-month high on Tuesday unwilling to fully commit to markets because of concerns the $1 trillion plan to contain Greece's debt crisis is only a short-term fix, not a long-term solution.
German Chancellor Angela Merkel's cabinet backed plans to contribute 123 billion euros in loan guarantees to support the euro currency which after initial euphoria on Monday brought it to $1.31, is now down 0.46 percent on the day to $1.2725 <EUR=>.
"We realize now that this is just another way of delaying perhaps the inevitable," said Shaun Osborne, chief FX strategist at TD Securities in Toronto. "It pushes the debt problems further down the road."
U.S. shares opened weaker in New York trade while European markets floundered. Chinese inflation, rising to an 18-month high in April, increased concerns the government still has its work cut out to keep the world's third-largest economy from boiling over.
In mid-morning New York trade, the Dow Jones industrial average <
> fell 35.67 points, or 0.33 percent, at 10,749.47. The Standard & Poor's 500 Index <.SPX> lost 4.27 points, or 0.37 percent, at 1,155.46. The Nasdaq Composite Index < > lost 7.93 points, or 0.33 percent, at 2,366.74.The FTSEurofirst 300 <
> index of top European shares dropped 1.53 percent, giving up some of Monday's 7.39 percent advance.Chinese stocks <
> fell 1.9 percent to their lowest level in a year on the worsening inflation outlook.MSCI's all-country world index <.MIWD00000PUS> fell 0.9 percent. Emerging stocks <.MSCIEF> dipped 0.7 percent while emerging currencies also pulled back.
In a sobering note, the International Monetary Fund said that even though Greece's public debt was sustainable over the medium term, the nation faced plenty of risks. [
]Moody's credit ratings agency also warned on Monday that it might downgrade Portugal's debt rating and further cut Greece's to junk status, noting the contagion effect of Greece's crisis on other euro zone members. [
]"The EU was never going to be able to give the markets a single knock-out blow," said Jim Wood-Smith, head of research at Williams de Broe.
"Markets have lost confidence in the EU and the euro. Until that confidence comes back we're in for a volatile period."
The greenback rose 0.33 percent against a basket of major trading partner currencies <.DXY>.
But even with the U.S. dollar's strength making the precious metals more expensive, investors pumped money into gold, lifting the spot price to $1,223.90 an ounce, its best level since early December.
"Investors are trying to search out safe havens, and clearly gold is one of those," said RBS Global Banking & Markets analyst Daniel Major. "While the current environment of acute investor risk aversion remains, gold is bound to benefit."
DEBT FLAT
The other traditional safe-haven, government debt, proved lackluster.
In Europe, while the cabinet backed the plans, opposition lawmakers warned it had yet to decide if it backed the rescue plan, leading European government debt to pare gains.
Bunds had recouped less than half of Monday's drop, when they suffered amid euphoria for riskier debt issuers following the announcement of the European rescue package.
The June Bund future <FGBLc1> was up 17 ticks on the day at 125.66 but off its session high at 126.29.
Non-core European assets continued to attract attention, such as 10-year Greek bonds, whose yield spread over Bunds contracted by 30 basis points - although that was a much smaller contraction than the 600 bps achieved on Monday <GR10YT=TWEB><DE10YT=TWEB>.
The cost of insuring Greek debt against default for five years fell to 560 basis points from 584.4 bps in New York on Monday, according to Credit Default Swap monitor CMA DataVision.
Volatile trade left U.S. Treasuries little changed. A raft of new issues may have also dampened demand.
Benchmark 10-year U.S. Treasuries were off 2/32 of a point in price, pushing the yield up to 3.54 percent <US10YT=RR>.
U.S. light sweet crude oil <CLc1> rose 38 cents, or 0.49 percent, to $77.18 per barrel
(Additional reporting by Wanfeng Zhou in New York, Blaise Robinson in Paris, Rebekah Curtis, Harpreet Bhal, Jan Harvey, and George Matlock in London) (Editing by Theodore d'Afflisio)