Bug#623130: workaround is highly desirable

[Daniel Pocock]

This is becoming a more common problem as several official organisations
(British and Polish tax agencies have been mentioned), banks and others
are now distributing PDFs that trigger this message.

By knowingly displaying this message, Debian is effectively undermining
our own mission, which is to advance software freedom

I would propose that Debian should patch all PDF readers to remove the
link to the non-free acrobat download and replace it with a link to a
page about this issue, mentioning the dangers of non-free software and
providing various options to help facilitate complaints to the
organisations that are using non-standard PDFs.