Today I was using disk inventory x to see how my new SSD is looking, and I noticed a large 4GB document file called sleepimage. I googled it, found out what it was, safely deleted it through terminal, and read up about what it is and what it does. Turns out it is supposed to be deleted after the computer wakes up, but obviously its not doing that anymore. I repaired disk permissions and its still not deleting it like it should. If anyone could shed any light onto this i would greatly appreciate it. Thanks in advance.