I did a couple of internships at IBM (1995 in Boca Raton and 2000 in Hawthorn). It was hard on young people even if you were in the office. You'd see your manager occasionally, but...it just felt like a place lacking in energy and was way too big corp to be very interesting. IBM is a big reason I delayed starting my career via grad school, a post doc in Switzerland, and then working for Microsoft in China of all places. I just didn't want the mundane techie experience, and was sort of so traumatized by IBM that I searched for different paths.