When an oracle chooses the deaf curse, they get all of the penalties that come with deafness, including a -4 initiative penalty, a 20% failure chance on spells with verbal components, and -4 penalty to opposed perception rolls. None of these things are calculated by PCGen.
File: Possible Patch.txt
Contains edits to two files to allow deaf curse to work properly.
Tested through level 15, seems to work correctly.
Thanks for the patch