This has come to my attention that Apple has recalled some Apple Macbook Models of the 64GB and 128GB SSD due to SSD failure.
Apple has determined that certain 64GB and 128GB flash storage drives used in the previous generation of MacBook Air systems may fail. These systems were sold between June 2012 through June 2013.
Apple or an Apple Authorized Service Provider (AASP) will replace affected flash storage drives, free of charge.
Test your device:
To see if your drive may be affected, go to the Mac App Store, click on Updates and choose the MacBook Air Flash Storage Firmware Update 1.1. The firmware update will test your drive to see if it is affected. You will be directed back to this page for next steps if needed.
IMPORTANT: If your drive is affected, we strongly recommend that you do not install any operating system updates or new applications. We also recommend backing up your data on a regular basis until you receive a replacement drive.
Source: http://www.apple.com/au/support/macbookair-flashdrive/
cheers for letting us know. Mine failed already and got fixed a week before the warranty was expiring. will have to check if the new one is good.