When running this command
dscl . -list /Users UniqueID, I get duplicate UID, for the Other, Others, Others... accounts, which is the same UID root uses.
daemon 1 Guest 201 myusername 501 nobody -2 Other 0 Other... 0 Others 0 postgres 502 root 0
I'm worried if this might be a security issue after I've updated from Yosemite → El Capitan (10.11.1), and I'm not aware if it was present before the update. I've found out about this after being unable to install Parallels Deskop 10. The message from parallels was:
ERROR: 15476. Cannot install Parallels Desktop because there is a non-root user account with the UID 0 in your system
So this leaves me questioned whether it's a Parallels issue or the permission configurations.