Comment 7 for bug 854333

Simply using "dpkg -L ibus" can show that the files related to the error is from "ibus" package.

So "ibus" should depends on "gnome-icon-theme".

It is certainly not the case now.
http://packages.debian.org/sid/ibus
http://packages.ubuntu.com/precise/ibus

So Kubuntu users still suffer from this bug over and over.
https://groups.google.com/group/ibus-user/browse_thread/thread/2569afaf8051328f