Apple has released a new firmware update for the mid 2012 MacBook Air today that helps to address problems with the device recovering from a crash. Apple release notes said the update addresses "a storage firmware issue that, in rare cases, may cause a system to fail to recover from crash."
The MacBook Air Flash Storage Firmware Update 1.0 is available to download on Apple's website here and should be hitting Software Update soon. The 1.69 MB update is available for mid 2012 MacBook Airs running OS X 10.7.5 or OS X 10.8.3.