Windows 7 Pro 64-bit
Intel Core i7-4770K CPU @ 3.50GHz
ASUS nVidia GeForce GTX 760 2GB GDDR5 DirectCU Mini
Broken: 2.69 r60995
Broken: 2.70 19e627c
Problem: Smoothing algorithm does not work properly.
When the selected keyframes in the file are subjected to the smoothing algorithm (alt-o) the results are actually much worse (bumpier) than before the algorithm was used.
Yes, I know this appears to be a 'worst case' scenario, since the curve in question has already been hand adjusted to be correct. But this algorithm is basically 'broken' if it makes such a curve worse than when it started.
In point of fact, I have attempted to use this 'smoothing' algorithm several times on real world problem curves and find that the results are so bad as to make it more trouble than it is worth. It is simpler to save time and adjust my curves by hand.
Such a function is needed within the graph editor, but the current results would suggest that this algorithm is really due for a re-write.
See attached blend file.