Bug#765973: more mystery

[積丹尼 Dan Jacobson]

Unpacking w3m-el-snapshot (1.4.538+0.20141007-1) over (1.4.537+0.20141001-1) ...
dpkg: cycle found while processing triggers:
 chain of packages whose triggers are or may be responsible:
  man-db -> menu
 packages' pending triggers which are or may be unresolvable:
  hicolor-icon-theme: /usr/share/icons/hicolor
  man-db: /usr/share/man
  doc-base: /usr/share/doc-base
  sgml-base: /etc/sgml
  menu: /usr/share/menu
  libglib2.0-0:i386: /usr/share/glib-2.0/schemas
  install-info: /usr/share/info
  desktop-file-utils: /usr/share/applications
  mime-support: /usr/lib/mime/packages: /usr/share/applications
dpkg: error processing package hicolor-icon-theme (--unpack):
 triggers looping, abandoned
Processing triggers for menu (2.1.47) ...

But then
# aptitude reinstall hicolor-icon-theme
# aptitude reinstall w3m-el-snapshot
give no errors!