Shearson Lehman Brothers Inc analyst David Readerman sent Borland International Inc shares into a tailspin again at the end of last week when he slashed his fiscal fourth-quarter earnings estimate for after a discussion with the company: he’s now going for 5 cents a share, down from his previous estimate of 20 cents for the quarter to this week after Borland said it was focusing on a new generation of products, investing in marketing and research and development, and suggested people be conservative in their forecasts for the quarter.