Didn't you mention sometime back that scientists had to disable a couple of computers that had developed their own language and was slagging off humans behind our back (or summat)
Surely the there will be a day when computers develope a back up plan to being erased by us and go underground without our knowledge,I can see this being both possible and dangerous in under 20 years and we will have to send a Terminator back in time to kill the scientists that developed Skynet?