Hi there. I'm running Mountain Lion 10.8.2. I deleted about 20GB worth of data from my hard drive but when I go into activity monitor and click on disk usage it doesn't show an extra 20GB of space. I did this 2 days ago. Is there something wrong with my hard drive? There is nothing in the trash and I have restarted my laptop twice now. Also, I use Daisy Disk to show my usage and it says the same thing as activity monitor. Thanks in advance!
Pro, Mac OS X (10.6.8), 13.3", 2010, Core 2 Duo 2.4, 4GB
“You may notice a difference in available space statistics between Disk Utility, Finder, and Get Info inspectors. This is expected and can be safely ignored. The Finder displays the available space on the disk without accounting for the local snapshots, because local snapshots will surrender their disk space if needed."