From frame 0 to frame 40 there is an animation on mapping in Color Nodes.
I don't know if in GLSL the animation should update itself or not, but the problem is it won't update even when rendering. However, when you change any of the mapping values, then it updates.
I have a blender file :D
thx.
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This is already a todo item;
http://wiki.blender.org/index.php/Dev:2.5/Source/Development/Todo/Tools#Animation