When Is My Job Coming?

I am waiting to hear from this company to see if I get a third and final interview. It has been a really slow process, my first interview was at the end of July, my second interview was at the begining of October, so at this rate I shouldn't hear anything for another 2 months. I get so frustrated when I think about how long it has taken, what could take so long to fill one position? I just hope I hear some time soon.