My recently owned and jailbroken iPad would sometimes freeze while browsing the internet and the only way to get out of this situation is by shutting off the device using power+home buttons. I used Crash Reporter to identify the problem and it's pointing at "/libexec/lockdownd". Any idea why this is happening? Any fix? I'm on iPad 4 4G, WiFi 32GB, iOS 6.0.1. Thanks!