Installed iOS5b7 (9A5313e) when it was first released using snowbreeze2.8b7 and have automatically just used iBooty when I needed to reboot because I understood it was a tethered jailbreak but today I find my iPhone 4 reboots untethered. 
Is this because I am running it stock and have never run cydia so the file system has not been rearranged as cydia does on first use?
Is this because I am running it stock and have never run cydia so the file system has not been rearranged as cydia does on first use?