Be warned! There is a new jailbreak tool on the net claiming to provide an untethered jailbreak and unlock to iOS 5. This is a SCAM! just another way to make money from the iPhone community. Stay away from this tool. This is their website: http://www.fastunlockiphone.com/. They are charging $24.99 for the jailbreak and unlock. This tool wont jailbreak your device, it will probably damage it. Stay away!
iPhone dev team approved this is a fake.