Issues firmware update for 27-in. iMac amid reports that it's stopped production
'Kill IE6' campaign momentum builds as thousands sign online petition
Quashes yet another password-bypass bug
Google's browser makes 5% mark as most rivals see usage share slip
One month before free copy quits every two hours
Mobile operating systems make more gains, Mac OS X up slightly
If Google had taken its own advice, it might have avoided Chinese hackers
Offers $500 for most vulnerabilities, $1,337 for 'particularly clever' flaws
Profits jump to $446 on top-end $829 model, analyst estimates
