I have noticed in the past that while working on a project sometimes my free space fluctuate wildy many tens of Gbytes suddenly appearing as available but then disappearing shortly thereafter. Today i went on a cleaning binge removing about 15 gbytes worth of media and render files which should have (and at first did) leaving me with at least 50 gbytes free then i looked at the space a little while later after quitting and i was back down to only ~35 gbytes free.
I did a little reserach and addition and found that i have about 35 gybtes unaccounted for on my main drive. i have done all the reccomended steps in the general forum for recovering missing disk space, repairing disk and permissions from the recovery partition (no significant errors, smart verified). i have even logged in a root and using drive mapping programs to see if there are more missing files i'm not counting and the only clue i have at this point is this ghost storage that occasionally shows up while working in FCP X.
Any advice or pointers as to what i can try next would be greatly appreciated and many points will be awarded to anyone can can offerr any help whatsoever, thanks!
Sys Info: 10.7.5 FCP 10.0.9 Mid 2009 13 inch MBP 4/250