Coding in an absurd reality

Hmmm, my 'aptitude update' currently ends with

E: Method rred has died unexpectedly!
E: Sub-process rred received a segmentation fault.

I'm not going to investigate the cause, but from http://ja.pastebin.ca/1655916, a workaround is to

Workaround: Until a solution is found, try updating your repositories with this:
apt-get update -o Acquire::PDiffs=false

Or by setting
Acquire::Pdiffs false;
in /etc/apt/apt.conf