Have you tried "dpkg --remove apt-listchanges" or "dpkg --purge apt-listchanges"?
Daniel -- /-------------------- Daniel Burrows <[EMAIL PROTECTED]> -------------------\ | "You see, I've already stolen the spork of wisdom | | and the spork of courage.. together with the spork | | of power, they form the mighty...TRI-SPORK!" -- Fluble | \-- Does your computer have Super Cow Powers? ------- http://www.debian.org --/