That's overly dramatic, but the thing that no one is saying is that it's entirely possible that after burning furiously for the last century the sun may have exhausted the fuel closest to the core, and as a result the rate of fusion has slowed.
So is it doomsday?
Not quite. There's still a lot of fuel there, but the sun is a really large object and it may take some time for more fuel to fall inwards to the center of gravity.
I'm no physicist but I've heard this theory before as sort of a "fringe" thing mumbled in science fiction backwaters. The upshot is that it could get pretty cold, so buy some long johns.
What's wrong with the sun? - space - 14 June 2010 - New Scientist