Odd...
I guess I always thought infusion would help to extend the life of the freebase?
I keep mine in small glass vials myself, in a small dark box out of the way. I have about 6 - 7 grams still that I extracted last year and infused and there are small pockets here and there in it where it is really powerful and it is really weak.
I personally attribute that to my mixing method though, what I suspect is some areas were more "soaked" than others during the infusion process. Still gets the job done though and with my current usage, this supply can easily last 5+ years.
"We speak of Time and Mind, which do not easily yield to catagories. We separate past and future and find that Time is an amalgam of both. We separate good and evil and find that Mind is an amalgam of both. To understand, we must grasp the whole." -Isaac Asimov
"You will not be punished for your anger, you will be punished by your anger." -Buddha
"I must not fear. Fear is the mind killer. Fear is the little death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when my fear is gone I will turn and face fear's path, and only I will remain." -Paul Atreides, while being tested with the Gom Jabbar by the Reverend Mother Gaius Helen Mohiam