I have gotten some of that fast-rising (50 percent faster! It says on the package) yeast several times and it has been an utter failure. It not only doesn't rise faster, it sometimes takes 4 times as long and then doesn't rise like regular yeast.
Regular yeast always works for me. I always check expiration dates, so that isn't it.
Is there something I don't know about this faster yeast - other than it sucks?