Apple today posted revenue of $6.22 billion and net quarterly profit of $904 million, or $1.01 per diluted share for its fiscal 2007 fourth quarter ended September 29, 2007. These results compare to revenue of $4.84 billion and net quarterly profit of $542 million, or $.62 per diluted share, in the year-ago quarter. Gross margin was 33.6 percent, u