Diffuse shows noisy render

I’m rendering an interior scene in cycles. But I’m seeing diffuse, diffuse+glossy these materials are becoming noisy…
Any cure for that?

More samples. Also, read this: http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Reducing_Noise

Without at least a render example (or a blend file), we can’t give more info than that.

I’m rendering it , soon will post in finished project thread. But I’m rendering in 1500 passes (CPU rendering only) - that’s pretty good for other scenes.