Is the new world's tallest building going through some issues? While so far only the observation deck is open, it's been temporarily shut down due to "unexpected high traffic" and "electrical problems." Ruh roh!

Residential and commercial tenants are due to start moving in this month, but it's not clear just what the problems are with the building that's keeping it closed up. Will there be a delay? Will it turn into a big, empty symbol of overdevelopment? Or did something just get screwed up with the elevators that they're now fixing? I don't know, but it all makes me glad I live and work nice and close to the ground. [Houston Chronicle via Fast Company]