unsure whether wiring is safe in rented apartment

I rent a unit in a pre-war building (which happens to be rent-stabilized). I have several fancy surge-protectors, and when I plug them in to the outlets in my apartment, they all report warnings about the wiring, supposedly indicating that the "hot" and "neutral" wires are reversed, which I've read is a serious safety hazard. The landlord told me they were fixing wiring problems before I moved in, but I'm guessing the job probably wasn't done right. What should I do?

Should I just tell the super? If he already approved the work that was done, then odds are that he'll just tell me everything is fine. Should I hire an independent electrician to inspect my place? I don't know enough about wiring to know if this situation is a violation of electrical code or perhaps just an inconvenience that I have to deal with at my own expense. Who's qualified to determine whether it's a violation of electrical code?

Incidentally, I love my apartment and want to stay here so I don't really want to piss my landlord off.