Apple should make better use of its cash reserves, or at least explain what it intends to do with them, says Bernstein Research analyst Toni Sacconaghi in a new memo. "Apple has done an extraordinary job in creating value for its shareholders over the last five years," he writes. "However, one common and growing source of investor frustration has been the companyís unwillingness to return any part of its burgeoning $46 billion cash balance to its shareholders or even discuss its vision for how the company plans to use its cash. We think Appleís cash policy ñ- or la
