Comment 2 for bug 1131195

Also, here is the script that I currently use to modify MainGTK.py

If you apply my suggestion of adding lines for "master_fade" speeds, then it'll be even easier for the script to check the current default fade speeds in MainGTK.py and then adjust them according to the inputted values.

I'm sure there is a much smarter way of doing this, but it's the best I can do. I hope this helps though.