I tried jailbreaking an iPhone 3G running iOS 4.1 using JailbreakMe.com and it failed. What does this mean? Apple might have patched the particular security flaw utilized by JailbreakMe.com. Some say that JailbreakMe.com is exploiting a PDF font bug in Apple renderer.
I started the jailbreaking process @ 11:30 PM and 30 minutes later nothing is moving.
I call this a good news for iPhone users in general. Sure it stopped one method of jailbreaking but more importantly it closes a security hole.
I attempted the iPhone jailbreaking for demonstration purpose only.
Remember that Apple will not provide any supports for jailbroken iPhone, iPad and iPad touch.