excessive, unaccounted for use of storage?!?
System folder clocks in at 5.43 GB and Library folder at 3.39 GB. So what is this "other" taking up 50GB???
Mind you, this is brand-spanking new 13" MBA, less than two months old.
MacBook Air, OS X Mountain Lion (10.8.4), Mid-2013 13" - 1.3 GHz i5/4GB/256GB