Is there a chance it's just a view error, and that what the system reports is just wrong?
Thats what I'd like to find out. I've seen so many different numbers in different places, and changing after doing certain things. I did the thing where Finder rebuilds the database and it didn't sort it out. I spend a lot of time keep things organised and I really need to see the right numbers for available space, so its still a problem, and seems basic enough that apple should sort it out!