Hi... I don't know, whether this has already been filed as a bug report, but console-apt/capt has a bug. Some packages have circular dependencies - like locales and libc6, I think. So if you expand dependencies for one of them, you start cycling through them, and when the indentation of the package name ( the first letter) reaches the right edge of the screen, it crashes with some signal 11 error. I Don't know, whether this can be exploited, but it's better to be sre.
(I don't consider circular deps the problem); P.S. I didn't file it as a bug report... Enjoy! Jure Mercun