There were some glitches in update-alternative at that time, fixed later in dpkg.
** Changed in: xfce4-session (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/381554 Title: package xfce4-session 4.6.0-1ubuntu2 failed to install/upgrade: process post-installation script is maiking code 2 in every update from changing to xfce4.6 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xfce4-session/+bug/381554/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs