GLOBAL MARKETS-Oil jumps to fresh high, US dollar at 5-month low

* Oil to 6-month high above $66 on economic outlook

* US dollar tumbles to 5-month lows as risk aversion eases

* Global shares surge to 2009 highs on recovery hopes

* Government debt keeps firm tone after vicious week (Updates with U.S. markets activity; changes dateline, previous LONDON)

By Herbert Lash

NEW YORK, May 29 (Reuters) - Oil prices surged to a fresh six-month high and the U.S. dollar slipped to a five-month low against major currencies on Friday on more evidence from around the world that the economic downturn may be easing.

Global stocks rose and some equities markets posted 2009 highs, eroding the safe-haven allure of U.S. dollar-based assets, and sending the euro EUR= to a 2009 high against the dollar.

U.S. Treasury and euro zone debt prices recovered with the help of mixed economic data and relief over a pause in government bond auctions, allowing the 30-year U.S. long bond to recover more than one full point on the day.

Bonds also got a slight safe-haven boost from data showing the U.S. economy contracted at an annual rate of 5.7 percent in the first quarter, a slightly smaller drop than initially estimated but worse than analysts' expectations. For details, see [ID:nN29399341]