problem with my left 4 dead 2

[Basztroy]

Mr steam is my left 4 dead 2 download something wrong me, I installed MySQL my left 4 dead 2 the content so that begins to download and once you download it sends me to download 9.0 gb. But the left 4 dead 2 no thought weighs 9.0 gb 14GB. I download those and 9.0 gb download once you have downloaded it removes and returns to start downloading the same 9.0-gb not understand doing that already made ​​me 2 times. Could help with left 4 dead 2 because it makes me not download 14GB