David Bremner uploaded new packages for notmuch which fixed the
following security problems:

DSA-2416-1 notmuch -- information disclosure

When using the Emacs interface, a user could be tricked into replying to
a maliciously formatted message which could lead to files from the local
machine being attached to the outgoing message.

For the squeeze-backports distribution the problems have been fixed in
version

        0.11.1~bpo60+1

For wheezy (testing) and sid (unstable) this was fixed in version

        0.11.1-1

For squeeze (stable), this is fixed in version

        0.3.1+squeeze1