I would say it is not. The OP on this bug reported that the drive did spin down but then spun back up.
Bug 595138 is a failure of the hdparm scripts to read /etc/hdparm.conf and properly set the spindown option. To answer Christoph's question, here's a link to how to figure out what is accessing the drive: http://info4admins.com/tips-to-spindown-your-hard-disk-in-debian-or- ubuntu/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/875719 Title: hdparm does not spin down hard disk on inactivity timeout To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/hdparm/+bug/875719/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs