I live in a student flat built in the sixties, and due to the low rank of us dwellers, they've never bothered to earth the power supply. That bothers me a bit. There is also a total of 4 (yes, four) power outlets in the flat, which means that I have to use an ever-growing chain of "splice outlets" (what the hell do you call those bars in English?), currently I'm at 5 pieces of six outlet bars, and one 10-outlet one, in order to drive all my computers. Still, I only suffer one power failure a year, and the electricity is free (or rather, split up between all residents and baked into the rent, which eases my load and makes my neighbours poorer ;-).
As for my stay in Japan, which is nearing its end, the power supply of the student residence is absolutely abysmal. I have experienced several brown-outs in the course of one year, and with only four 100V outlets, I can't drive anything. With a refridgerator, a TV+video and my A4000, that's about all it can handle without actually needing to worry about blowing a fuse. To add insult to injury, the Japanese power system is at an 1800s level. In the summer, when everyone wants to run their air conditioners at full throttle, the power plants are so overloaded that there are latrge campaigns to urge people to leave work at high noon, or at least suffer without the air conditioning.
Then we have the actual power outlets. Earthed sockets are an unheard of luxury here, and the sockets are of the little American type. Really small sockets, with flat pins, which just hang onto the wall by the friction of these pins, which just aren't up to the job. Mere gravity is constantly threatening to pull out the sockets, since they aren't docked into the wall like European ones.
And then we have the funny situation where parts of Japan uses 50 Hz, and other parts 60 Hz for their power supply.
Makes my power supply at home seem like that of some kind of high sexurity data centre.
