I am curious if you can replicate the following steps and results, and if you too think this reported behavior is a bug. You should get different behaviors using CS3 vs. CS4.
Using CS4:
1) Open up an image.
2) Insert a point sample on the image (say 3x3) point sample
3) Add an adjustment curve and move the RGB curve so that the image lightens and darkens. You should see the first set of numbers in the info palette showing you the original and the second set showing you the revised values. So far, so good.
4) With your image adjusted (make it a big adjustment), open up your "Blend If" sliders on your curves adjustment layer. When you do this, do you notice that your first and second set of numbers on the info palette have reversed positions?
5) Now move the Blend If sliders so that your image is affected. Do you notice that the values in the info palette remain frozen?
I *believe* if you use CS3, then a) the numbers don't reverse as shown in Step 4; and b) the values do change when you move your blend if sliders around.
Linear Mode
