WTF is wrong with smooth?! need help

I just noticed this, but in blender 2.4 whenever i set something on smooth, it turns out really glitchy in the render. This problem did not occur in the 2.37 version. HOw do I fix this problem? Please help.

Example solid:

Example smooth:

Toggle the “Auto Smooth” to on.


also… recalc normals to outside… I think it’s ctrl+n or something…

thanks a lot :smiley: