I upgraded to 15.10 and still had same effect. Just tried a different device and it seems to be behaving correctly. The upgrade though has rendered my development environment unusable, I can't delay a fresh install any longer. I'm also going trial a different distro for a few days. Hopefully this auto-mounting bug was a rare event. If this gets left open for a little longer, I'll report what next install does. Many thanks.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1507183 Title: "safely remove" remounts after a couple of seconds To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/udisks2/+bug/1507183/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
