I have reproduced the problem with aptitude 0.4.11.11-1ubuntu10 in lucid following the steps described by Wesley in comment 25 and have verified that the version of aptitude 0.4.11.11-1ubuntu10lucid1 in -proposed fixes the issue.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/508545 Title: Aptitude ignores /etc/apt/preferences.d/* To manage notifications about this bug go to: https://bugs.launchpad.net/aptitude/+bug/508545/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs