Maybe Asimov's 3 visionary laws will come in handy soon:

1.) A robot may not injure a human being or, through inaction, allow a human being to come to harm. 2.) A robot must obey the orders given it by human beings, except where such orders would conflict with the First Law. 3.) A robot must protect its own existence as long as such protection does not conflict with the First or Second Law.

http://en.wikipedia.org/wiki/Three_Laws_of_Robotics

... The only problem is the robots then started interpreting the laws to their own advantage.