Shares of California Pizza Kitchen are up almost 10 percent this morning following a report in the NY Post that the L.A.-based restaurant chain was in advanced talks with private equity firm American Securities Capital Partners. American Securities, according to the Post, is trying to borrow money to fund the leveraged buyout. Be careful about jumping the gun: The LAT's Tom Petruno points out that three weeks ago the Post was reporting that a CPK deal was looking less likely.