root@touki:/home/touki# apt-get -t squeeze-backports install icedove
Reading package lists... Done
Building dependency tree
Reading state information... Done
icedove is already the newest version.
The following packages were automatically installed and are no longer required:
  libntfs10 gs-gpl diffstat xulrunner-1.9.1 gcc-4.3-base quilt ghostscript-x
  libfuse2 libdb4.7-java-gcj libjaxp1.3-java fancontrol libdb4.7-java
  linux-kbuild-2.6.32 cpp-4.3 cpp-4.4 fuse-utils linux-headers-2.6.32-5-common
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 119 not upgraded.