The iPhone Dev Team released a jailbreak for iOS 5.0.1 on Tuesday that does away with the need to connect your iPhone, iPad or iPod touch to your computer every time you reboot the mobile device.
Jailbreaking is a process where users hack their iOS device so third party apps that aren’t available through Apple’s App Store can be installed.

Untethered jailbreak for iOS 5.0.1
It’s often a throwaway comment that Apple’s UIs are better than everyone else’s, and it’s not always true (as the soon-to-be-discontinued MobileMe service attests). But in mobile, iOS is in fact a better-designed UI, one that makes accessing capabilities and information easier and faster. iOS 5 doesn’t mess with what you already know from previous versions, but it does enhance the UI further with the Notification Center, improved gesture support, much simpler synchronization capabilities, and a few enhanced settings. Then there’s the iPhone 4S’s Siri, which opens up a whole new, hugely convenient way to interact with many apps and services.