dpkg: error processing libtiff4 (--remove):
 dependency problems - not removing
Errors were encountered while processing:
 libtiff4
yanl@worlds-crap:~$ sudo apt-cache policy libtiff4
libtiff4:
  Installed: 3.7.2-3
  Candidate: 3.7.2-3
  Version table:
 *** 3.7.2-3 0
        100 /var/lib/dpkg/status
     3.6.1-5 0
        500 http://mu.archive.ubuntu.com hoary/main Packages