WRAPUP 6-Alaska ethics probe says Palin abused her power

* McCain softens personal attacks on Obama

* Obama urges world leaders to coordinate action on crisis

* Newsweek poll gives Obama 11-point lead

By Caren Bohan

CHILLICOTHE, Ohio, Oct 10 (Reuters) - An Alaska ethics inquiry found on Friday that Gov. Sarah Palin, the U.S. Republican vice presidential candidate, abused her authority by pressuring subordinates to fire a state trooper involved in a feud with her family.

The finding cast a cloud over John McCain's controversial choice of running mate for the Nov. 4 election. On the day it was published he reined in an aggressive strategy against Barack Obama that had failed to cut into his Democratic rival's lead.

After a week in which he and Palin fiercely attacked Obama and inflamed supporters by urging them to question his fitness to be president, McCain switched to a milder tone, calling on frustrated loyalists to respect the Illinois senator.

Supporters appeared surprised by his conciliatory approach, booing at a Minneapolis rally when he told a skeptical backer that Obama was a "decent person and a person that you do not have to be scared (of) as president of the United States."

The Alaska inquiry centered on whether Palin's dismissal of the state's public safety commissioner, Walt Monegan, was linked to her personal feud with a state trooper who was involved in a contentious divorce with the governor's sister.