my friend is selling me an ipod touch for $100. i have a few questions. 1. (Its jailbroken) i checked sbsettings and it says it has like 48 on available memory, is that normal? 2. 4.0 features will be enabled with the new version of redsn0w, right? Will it be untethered. 3. im not going to be using my ipod touch 3G 32GB, if i turn it OFF, (not sleep), how long will the battery last, and does anything happen to the ipod if its not in use for a while?