This is very strange... did you ever rebuild a gtk+3.0 package yourself, or install from a PPA?
** Changed in: gtk+3.0 (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gtk+3.0 in Ubuntu. https://bugs.launchpad.net/bugs/1408721 Title: package libgtk-3-0 3.14.6-0ubuntu1 failed to install/upgrade: trying to overwrite shared '/etc/gtk-3.0/settings.ini', which is different from other instances of package libgtk-3-0:i386 Status in gtk+3.0 package in Ubuntu: Incomplete Bug description: Rolling release failure after an upgrade. ProblemType: Package DistroRelease: Ubuntu 15.04 Package: libgtk-3-0 3.14.6-0ubuntu1 ProcVersionSignature: Ubuntu 3.16.0-28.38-generic 3.16.7-ckt1 Uname: Linux 3.16.0-28-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.15.1-0ubuntu1 Architecture: amd64 Date: Thu Jan 8 19:59:38 2015 DuplicateSignature: package:libgtk-3-0:3.14.6-0ubuntu1:trying to overwrite shared '/etc/gtk-3.0/settings.ini', which is different from other instances of package libgtk-3-0:i386 ErrorMessage: trying to overwrite shared '/etc/gtk-3.0/settings.ini', which is different from other instances of package libgtk-3-0:i386 InstallationDate: Installed on 2014-12-16 (23 days ago) InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Alpha amd64 (20141214) SourcePackage: gtk+3.0 Title: package libgtk-3-0 3.14.6-0ubuntu1 failed to install/upgrade: trying to overwrite shared '/etc/gtk-3.0/settings.ini', which is different from other instances of package libgtk-3-0:i386 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/1408721/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp