Dell returned in 2007 to run the company he founded in 1984, replacing Kevin Rollins at the board's request. With his company hit by a decline in PC sales, Dell proposed taking it private in February this year. Private equity firm Blackstone Group and activist investor Carl Icahn have since joined the bidding for the computer-maker. Dell Chairman and CEO Michael Dell delivers a keynote at the Oracle OpenWorld 2011 conference in San Francisco.
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