Okay, don't get mad at me for posting this. I've looked everywhere for the answer, so don't tell me to go search. I need to delete Cydia and re-install it because it's causing problems for me. It makes my iPod crash, and so did Rock. I think all I need to do is get rid of the "essential upgrade" Cydia tells you to get right after you open it upon jailbreaking/dowloading Cydia. A friend has the same iPod and didn't download that upgrade, and he's never had his iPod crash like mine does. It's the only thing that makes sense. I found where you can do it in mobile terminal, but mine didn't quite pan out so well. I opened it up, typed "su" and pressed enter. when I'm supposed to type in "alpine" the letters don't show up on the screen, and it says "Password:" wtf. Can anyone help me.. please?