Package: apt Version: 0.6.45 There's already a couple of bug reports requesting that this be fixed, but I didn't find any requesting that this long-standing issue be documented.
I would suggest something in /usr/share/doc/apt or in the error message itself that tells users that the fix/workaround for this problem is edit the Cache-Limit variable in the apt.conf config file. Perhaps the patch submitted to the deity list a little while back: http://lists.debian.org/deity/2005/01/msg00028.html I've attached the /etc/apt/sources.list which triggers the error for me.
deb http://ftp.debian.org/debian/ woody main contrib non-free deb http://ftp.debian.org/debian/ stable main contrib non-free deb http://security.debian.org stable/updates main contrib non-free deb http://ftp.debian.org/debian/ testing main contrib non-free