What's behind the story in The Telegraph that "Rift between Gordon Brown and Lord Mandelson threatens Labour revival"?

Today's piece in The Telegraph revealing that: "A rift between Gordon Brown and Peter Mandelson is threatening to derail Labour’s plans for a New Year fight-back, it can be disclosed." is a fascinating read. Apparently:

"A series of disagreements have strained the close political relationship between Mr Brown and Lord Mandelson that helped the Prime Minister survive as leader earlier this year.

It is thought it could lead to more uncertainty over the Labour leadership with the election just months away.

Lord Mandelson has been credited with ensuring that Mr Brown survived as Prime Minister when he successfully rallied cabinet colleagues behind Mr Brown when a series of resignations in June threatened to force him from office.

However, he has grown increasingly disenchanted with Mr Brown and in recent weeks the relationship has deteriorated further.

Last night, one close friend of Lord Mandelson told The Daily Telegraph: “Peter thinks that Gordon has used him to stay in place and has now just disposed of him. He clearly thinks he has served his purpose and Peter is upset about that.”

Disputes over policy have stretched the relationship between the two men to breaking point. A source claims that Lord Mandelson feels he has been “ganged up on” on various issues.

This month’s pre-Budget report, which attacked the bankers and failed to offer a more credible route for paying off the deficit further, infuriated the Business Secretary.

He made it clear he did not agree with “banker-bashing” but was over-ruled by Mr Brown. "

The article goes on and on from the viewpoint of Peter Mandelson and seems as though some repositioning is going on at the top of the Labour party with Peter Mandelson moving away from the dead duck that is Gordon Brown whilst Ed Balls moves back into favour with Gordon Brown.

I wonder who will be taking Christmas presents to who over the Christmas break...