Storage not displayed properly in "About this mac" section

Please refer to the image to see how Storage is showing me the space division.

Its showing amount of space available correctly but the division below is incorrect as you can see it is showing 249.72 GB for Apps and I only have 249.78 GB total space.

What can I do to correct this?

Edit :

Hi guys, thanks to everyone who responded and provided there inputs to solve my problem, really appreciate it. I don't know how but the space division is showing correct division now (I guess) , here is the snapshot of what is currently displayed :

I am not sure how it got corrected, the only thing I did was restart and immediately there was no change, but then I had some work and came back to the macbook again and saw the above scenario. Still not sure what does other signify and I am pretty sure that the space allocated to apps is wrong, is there anywhere I can check other than storage about how much space is allocated to Apps?

I had a similar problem, and rebuilding my Spotlight index solved it for me.

Simply restarting my computer (a less time costly operation), has also worked in the past.

The spotlight database and indexing process does generate the data, so if you are able to use Activity Monitor to look at all processes (or top -u -s 10 at the unix command prompt) you might let spotlight finish indexing and see if this is a temporary situation due to poor estimates of the files on the disk.

If this is something that persists more than 48 hours (set the OS to not go to sleep), I would capture spotlight diagnostics in terminal by running mddiagnose and then make a full backup and contact Apple Support.

If you don't have support, the next step would be to erase the drive and reinstall the OS. After a clean install, spotlight should index over an hour or three and the settings should be 100% correct.

At that point, you know the OS works, the hardware works. Then you can restore files and apps from the backup.