I had something similar happen to me at IBM in the late 90s. I came to my cubicle one morning to find the PC case slightly ajar. I set the monitor aside and opened it. The sole 8 MB RAM stick was gone. I reported it to my boss who explained that someone would've taken it because getting an upgrade was an impossible bureaucratic feat, but getting a fix was trivial. Probably I was picked because I was obviously the youngest person in the office, so I must not have any power. I did indeed have a repaired PC the next day, though.