If you have a DC24 like mine and you find the brush has stopped rotating because it got clogged [symptoms are that it doesn't vacuum the floor properly, even though the suction works on the attachment], try taking off the brush roll holder and cleaning it. See: youtube.com/watch?v=ghvP8X0TMMs
That's what I did and it worked fine. No spares to buy, nothing broken.
John B
April 2011