I've had the same problem on my system. It occurs when, as the OP stated, changing permissions of a folder in root mode. I will attach 2 backtraces. The first I attempted to change permission of owner, then group. The second I attempted to change group permission first (as I believe this is where the crash occurred).
** Attachment added: "gdb-nautilus.txt" http://launchpadlibrarian.net/13138576/gdb-nautilus.txt -- Nautilus crash when changing directory's owner https://bugs.launchpad.net/bugs/208394 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs