I found that the program "evince" which is used for PDF reading/viewing writes to the home drive See /etc/apparmor.d/usr.bin.evince where it has:
# evince creates a temporary stream file like '.goutputstream-XXXXXX' in the # directory a file is saved. This allows that behavior. owner /**/.goutputstream-* w, Of course, several other programs could use the same technique to save status info, neglects to clean them up. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/984785 Title: .goutputstream files polluting $HOME To manage notifications about this bug go to: https://bugs.launchpad.net/glib/+bug/984785/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs