I did a fresh install of Lion on my 128 Gig 13" 2011 MBA. Reason is I did a time machine migration and got to much crap moved over. Started over and only took the mail folder. Much better. However what I don't understand is that I get the following: Capacity: 120.47 GB Available: 110.76 GB I checked all the sizes and if I add up: Users System Applications Library it only comes out to ~5 GB so where did the other 5 GB go? Could it be the virtual memory swap file? Any insight more than welcome!