Can anyone please tell if if this is normal/safe?

Question

... or should I be worried someone has been snooping on my computer.... I don't think I've ever noticed an "unknown" level for user access before.
http://postimage.org/image/9ml6bo3o/

Answer 1

None of the permissions for the drive are correct. They should be:
Owner=system with r/w privileges
Group=admin with r/w privileges
Everyone with read-only privileges
Open the Terminal application in your Utilities folder. Enter the following commands pressing RETURN after each:
sudo chown root:admin /
sudo chmod 1775 /
killall
This should set the permissions for your drive back to what they should be. Of course without any additional information it's impossible to know if the permissions elsewhere on your drive are correct. It would make sense for you to do the following:
Repair the Hard Drive and Permissions
Boot from your OS X Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported , then quit DU and return to the installer. Now restart normally.
After the computer boots up open Disk Utility then select your OS X volume and click on the First Aid tab in the DU main window. Click on the Repair Permissions button.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.