wrapping up, at this moment the GC-think boiles down for me as follows:

When you use JPG for diffuse/color texture, and it contains a colorprofile (different from the JPG default one, which I presume is gamma=2.2 but might be sRGB) and you run PP2010, then it will use the profile instead of the default while P8 (and earlier) will use the default instead, as will most renderers around. Correct?

When this JPG default is gamma=2.2 indeed and sRGB is applied for adjustment, then PP2010 will show a lighter texture in the dark areas of it, and a mildly darker texture in the light areas of it. hence you'll experience a slightly reduced contrast and more detail in the dark areas, especially in places where the scene is somewhat dark too. Thats good.

When you apply a different image format, or you apply it to a different channel, or it does not include an explicit color profile (*) or the JPG default already is sRGB, then PP2010 produces results similar to P8 - with respect to this subject at hand. Correct?

(*) just open the JPG in a text editor, it will show some readable ICC profile info in the first part of the file. Or use a hex editor instead. The profile takes about 3kb file space.

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Usually I'm wrong. But to be effective and efficient, I don't need to be correct or accurate.

visit www.aRtBeeWeb.nl (works) or Missing Manuals (tutorials & reviews) - both need an update though