Palin gripes about Fox News on Facebook

NEW YORK, Aug. 31 (UPI) -- Sarah Palin used Facebook as a platform to vent about Fox News canceling her network appearance Wednesday during the Republican National Convention in Florida.

"I'm sorry Fox cancelled all my scheduled interviews tonight because I sure wanted to take the opportunity on the air to highlight Senator John McCain's positive contributions to America, to honor him, and to reflect on what a biased media unfairly put him through four years ago tonight," the Facebook post reads.

New York Magazine said the post revealed a rocky relationship between the network and the 2008 Republican vice presidential candidate.

Palin and Fox are in the early stages of contract negotiations and the magazine's sources say Fox executives have been disappointed by Palin's ratings. Earning roughly $1 million a year from Fox, she is the network's highest-paid contributor. The magazine said Palin has been unhappy because Fox has not been giving her top billing.

The magazine said Palin's agent, Bob Barnett, did not respond to a request for comment. Fox News said it looks forward to "a long and beneficial relationship with the governor."