Should both ground and neutral in an electrical subpanel be bonded to the service ground?
This is an example of a 100 amp Sub-panel coming off of a 200 amp Main-panel.  Note the errors to current NEC code.  Since there was an upgrade to the system, this one needed to be upgraded to current standards.

The ground had been connected to the neutral lug and the ground stake had also been connected to same.  Also, note the horizontal bus connector bar.

(Believe it or not, the local electrical inspector missed this during remodeling with added circuits.)



This shows the corrected connections in the same panel.



This is the removed bar: