Smoke is not rendering with fire in blender?

Hi, guys! I’ve made a fire and smoke simulation in blender 2.71 (w/ cycles render), the problem is in the viewport the smoke is clearly rendering and is visible. But when I render the scene on the fire is visible and NOT the smoke :(. I think my node setup is fine, and I’m unable to detect some mistake or problem.

Fire+Smoke Sim in viewport:


My node setup:


Test render(in cycles) 10 samples:


As you can clearly see, no smoke is getting rendered only fire is rendering, any help/suggestion is greatly apreciated.

Two things.
1 - Add a node Math and set Multiply after the node Attribute(“density”) to each volume node. Increase the “Value” will make the smoke get more dense.
2 - You can can move the “points” on Color Ramp.
EX : http://www.local-guru.net/blender/fire_nodes.png