Will Artificial Intelligences Find Humans Enjoyable?
futurepundit.com
futurepundit.com
http://wiki.lesswrong.com/wiki/Paperclip_maximizer
The wording here understates the problem--the program might start with a goal as benign as "collect paperclips" as opposed to "fill the universe with as many paperclips as possible" but the outcome could be similar.
Given the ease with which programs can be copied or modified (and mistakes made), I can't see many futures filled with strong AI's that end positively for us, chiefly because of the asymmetry in difficulty of destroying civilization vs. protecting it from all possible dangers.
Which is also why I don't fear computers and robots as much as those who are capable of creating and wreaking havoc with them. Other humans are far more a problem than the technology they invent. The rules we live by are far more important than our technology.