Most of the difference you're seeing is due to Time Machine's "Local Snapshots" feature. When Time Machine is turned on but the backup device isn't available, it backs up to the local volume. The space used for these local snapshots is counted as "in use" by Disk Utility and System Information, but not the Finder (see the Disk Space considerations section of this article). While the space for backup actually is in use, it'll be freed automatically when needed (i.e. when the volume gets above 80% full), so the Finder counts it as being available.
In your particular case, the space System Information lists as being used for "Backups", 98.36GB, is very close to the difference in free space listed by the Finder vs. the other two. The Finder's 206.43GB free - 98.36GB of backups = 108.07GB actually free; compare to System Info's listing of 108.44GB free and Disk Util's 108.31GB. I'm not sure what the rest of the difference is (maybe they looked at the disk at slightly different times? Or they may be counting volume structures a bit differently?), but it's very small.
Finder shows:
- easily, the truth for JHFS+ volume Macintosh HD
- optionally, the truth for mtmfs volume MobileBackups
Hint: with local snapshots enabled in Time Machine, in Finder you can go to /Volumes/MobileBackups
then get info.
Results of a one-line command show that for some purposes, MobileBackups is treated as a distant file system:
qlmanage -m disks | grep MobileBackups && mount | grep MobileBackups
As Disk Utility is oriented to local file systems, we'll probably never see MobileBackups as a separate volume in that context. There are degrees of simplification in Disk Utility, even when debug options are chosen.
I'm assuming this is a USB mouse with a cord? I have seen issues with those not recognizing properly until login when connected through the USB ports on a keyboard, or on laptops. I've always accounted it to the mouse needing more voltage than the USB port is delivering until the user is logged in. This seems to be the case with older mice more often than newer ones.
Best Answer
Try reindexing spotlight:
WARNING: This will consume large amounts of power (at first you can expect about 1% of power loss every 15 seconds or so, but it will slow considerably). It will also slow you computer considerably, using up almost all of one of your CPU cores, and about 2 GB ram. This is from my experience on a 1 TB hard drive, so it may be less or more intense for you.
P.S. Plug in your charger before doing this.