Apple is facing yet another lawsuit, but this time it's not over smartphone patents, tablet designs, or any of the other myriad issues that boost billable hours for the company's legal counsel. At stake in this legal dispute is cold, hard cash, and the plaintiff is one of Apple's own shareholders.Related StoriesCheap 4G on the way: Ofcom comes up £1bn short in auctionSir Jony Ive on thinking outside the box: extended Blue Peter interview