Browser plugin installed without permission

[Vadim R. Kotov]

This package installs a browser plugin (which allows to view *.pdf files in browser tabs) without asking any permission from the user. The plugin can be disabled later, however even disabled it creates a junk file in home directory (see https://bugs.launchpad.net/ubuntu/+source/acroread/+bug/986841).

lsb_release -rd
Description: Ubuntu 12.04.4 LTS
Release: 12.04

apt-cache policy acroread
acroread:
  Installed: 9.5.5-1precise1
  Candidate: 9.5.5-1precise1
  Version table:
 *** 9.5.5-1precise1 0
        500 http://archive.canonical.com/ubuntu/ precise/partner amd64 Packages
        100 /var/lib/dpkg/status

What expected:
During installation there is a package setup promt asking whether to make acroread the default *.pdf viewer. After this question there should be a promt asking if acroread browser plugin should be installed.

What happened:
The only question asked during installation was the one about default viewer.