The Register reports that Carly Fiorina is out at HP:

Carly Fiorina has left her post as chairman and chief executive of HP with immediate effect. Robert Wayman, HP's CFO, takes over as interim chief executive and will lead the search for Fiorina's replacement. He retains responsibility for finance.

Patricia Dunn, an HP director since 1998, becomes non-executive chairman of the firm.

In her valedictory statement, Fiorina said: "While I regret the board and I have differences about how to execute HP's strategy, I respect their decision. HP is a great company and I wish all the people of HP much success in the future."

The Register notes that it's an odd point for a CEO to bow out; they have some speculation though:

Fiorina's sudden departure follows rumours that HP's board of directors was unhappy with her patchy performance and was looking for ways to reduce her responsibilities. HP said on Monday that Sanford Litvack was leaving the board and would be replaced by Thomas Perkins who was an HP director between 2002 and 2004. He originally left because at 73 he was too old to sit on the board - HP policy says directors should not be over 70 years old.

fascinating. Update: Misbehaving has a few thoughts on this, from the "women and technology" POV