For anyone out there who is not able to re-jailbreak. You need to restore your iPhone to factory and BEFORE you restore your settings, e.i. apps, contacts, etc. jailbreak again. After you jailbreak, sync your phone to a past backup. What happens is jailbreakme.com thinks you already have the JB if you don't follow the above steps and therefore all you get is Safari shuts down and nothings else happens. Hope this helps somebody out there.:iphone4vert: