Ice Age Took 6 Months to Form?

Who would have thought a Dennis Quaid movie could be right? (well, except for Enemy Mine, which I maintain is simply to awesome to not come true some day)  Geology researchers are now saying that the last ice age could have happened in an extremely short period of time, not the previously thought decade or so.  This is based upon some research done in Ireland on lake bed.  I’m not going to pretend I know the first thing about this stuff, but it is interesting to think that our climate is much more fragile than we thought.  Plus, anything that allows me to reference Enemy Mine I’m gonna post toot-sweet.