said by TheTechGuru:Sounds like some moron replaced some outlets without running new wire to them, big no no unless they replace with 2 prong outlets (which are available).
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I'd say the whole place needs to be rewired, anytime I've seen 2 prong outlets the wiring behind it has been ALUMINUM!
Aluminum romex was not widely used until 1970 and it contained a ground wire connected to a 3 prong outlet as codes required.
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At minimum I would try to get new outlets installed where properly grounded 3 prongs are needed, like computer and TV areas.
Computers and tv's don't necessarily need a grounded outlet. Many people run equipment all the time on ungrounded outlets.