I jailbreak my touch with ipodtouchmaster before, but seems like it will crash the machine with Summerboard running. I thus turned to iJailbreak, where everything seem working fine. However, it hanged my touch a couple of times and I use the usual method to hard reset the machine (standby + home for 10 secs). I'm pretty sure I release every button and wait a few sec before turning it on again. However, every time it goes into recovery mode. Anyone can verify this is ijailbreak issue?