Is Meg Whitman, the former CEO of eBay and ardent supporter of John McCain during the election, gearing up for a run for California governor in 2010? Quite possibly, as the billionaire resigned from three corporate boards on Monday.

Whitman’s spokesman, Henry Gomez, said she stepped down from the boards of eBay, Procter & Gamble Co. and DreamWorks SKG as of Dec. 31. He said it was for “personal reasons and time commitments” but would not elaborate.

A person who is knowledgeable about Whitman’s political aspirations told the AP that the 52-year-old Silicon Valley leader is planning to run for governor in 2010, not the seat of Democratic Sen. Barbara Boxer, who will be up for re-election in two years.

She made the decision while spending time with family over the holidays but is not ready to announce it formally.

The source tells the San Francisco Chronicle that Whitman will announce her decision in a matter of weeks. What kind of environment would she face? A likely unfavorable one for Republicans. The state isn’t exactly flourishing under Arnold Schwarzenegger, last seen looking to release convicts in order to cut the budget and hoping that the court system would overturn the voters on Proposition 8.