Obviously, this tip won't apply to everyone. The 'killswitch' is there to remotely remove potentially malicious apps on your iPhone. Apple has stated before that to not have a 'killswitch' would simply be negligible on their part. So if Apple is activating the 'killswitch' they'll have good reason. But for those who would rather keep all the Apps that may not be okay by Apple's standards, this is the easiest way to disable the 'killswitch'.
So for those with jailbroken iPhones, you can sleep a little easier at night knowing that you've turned Big Brother off. Simply point your jailbroken iPhone to Cydia and download BossPrefs and you'll see the switch to switch off the 'killswitch'. Viva La Revolucion.