    Apple Cash Pile Sets Off a Battle  Apple CEO Tim Cook is
facing a new reality: delivering steady results from one of the
world's most valuable companies is no longer good enough.  Apple
Inc. Chief Executive Tim Cook is facing a new reality:
delivering steady results from one of the world's most valuable
companies is no longer good enough.  For nearly 18 months, Mr.
Cook has kept a stream of new products rolling, produced a
string of robust quarterly results and introduced a dividend and
stock buyback expected to cost $45 billion over three years.
But an attack from one of Apple's prominent investors
underscores how that approach may not be enough anymore,
especially amid intensifying industry competition and the
company's slowing growth.   On Thursday, hedge fund manager
David Einhorn sued Apple in a New York federal court in an
effort to block an Apple shareholder proposal that he argues
could limit how the company could return some of its $137
billion cash pile to investors. Apple is proposing to requi