I would tend to say it happens whenever you try to copy from one device to another.
This happened here at least in these cases : - from a smb share to local desktop - from usb key to local desktop -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/944624 Title: nautilus crashed with SIGSEGV in mainloop_proxy_func() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/944624/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs