So I just now jailbroke my iPod to the 3.0. I opened cydia and it promted me to "upgrade essential" so I pressed "Update essential" it went to the screen showing the list of updates and I pressed confirm in the top right corner bringing me to the normal download and install debug screen. However a notice popped up saying "Couldn't configure pre-depend dpkg for ncurses, probobly a dependency cycle" I am not sure what to do about this or what to think. What should I do? Why is this happening, and what is a dependency cycle? I just realized that I can't install anything else either. This has made more of a worry to me.