Here is an easy way to Jailbreak [Untethered] iPad, iPad 2, iPhone 4, iPhone 3GS, iPod Touch on iOS 4.3.3.
JailbreakMe 3.0 allows easy jailbreaks by simply visiting the JailbreakMe.com website, thanks to a PDF exploit in Safari. JailbreakMe is fully untethered, meaning that you don’t have to plug your device into your computer in order to boot it into a jailbroken state. It works with every device on the face of the earth (running firmware 4.3.3), including the iPhone 4 and the iPad 2 (3G, CDMA & WiFi models).
How to Jailbreak iPad 2, iPhone iOS 4.3.3
Step 1: Launch Safari open http://jailbreakme.com. tap on the “FREE” button, followed by “INSTALL”.
Important: Click it once, even if it takes sometime.