Hopefully someone has an idea of why this occurs. I have an Intel 80GB SSD in my MacBook Pro. I do not use Time Machine. I initially could not figure out why my SSD was almost full (besides the obvious that is small). I counted everything up and it came nowhere close. I have 55GB of files yet it says I only have 6 GB free. Every now and then it will say I have up to 14 GB free which I feel is more accurate given the probability of hidden system files. Then it will randomly go back to 6GBish. Any thoughts?