I inspected all my outlets after finding out what 60VAC feels like going up one arm and down the other (touched two server cases, one on a grounded outlet, the

I inspected all my outlets after finding out what 60VAC feels like going up one arm and down the other (touched two server cases, one on a grounded outlet, the other floating). I found several suprises: a knob and tube circuit had been "upgraded" to 3-prong faceplates without wiring the ground to _anything_, and some outlets were backwards. You never know if it's the work of a DIY electrician unless you get it checked out.