There is a solution; set your network settings from scratch,

Question

If you are moving to the MBA from another mac computer, set your network settings up totally from scratch. If you have been having network wifi problems, did you migrate from another mac?
If you look at the previous macs, all of them had networking primary interface as en0 = ethernet.
On the MBA, alone of all macs, the primary network interface which is en0 is the wireless and therefore different from any mac you have used via wifi before.
There is nothing wrong with the Network interface on either but they are not the same and should not be treated as if migration can transfer the settings and be expected to work perfectly.
If you have had wifi problems, reset your network preferences, not just your wifi settings themselves.
As someone else posted in internet topic, migration could be your network problem. Reset all network and re "apply" settings if you are having wifi difficulties.
Message was edited by: Rhyd

Answer 1

I know this is late, but here's the only way I got around this issue without having to start all over with a blank iPhone.
I restored my backup to a DIFFERENT iPhone 4. The restore still "failed" at the very end of the restore, but when the phone rebooted, everything I had restored was there! I then backed up the newly restored iPhone 4, and then restored that backup to my iPhone 5. Problem solved.
One thing to note; if you restore your original backup to an iPhone 4 that still has data on it, the restore will combine all the photo albums & Music.
I tried a lot of other things first before comming to this solution. I also jailbroke my iPhone and tried deleting the camera roll, deleting the iTunes sync information, deleting different preference files, resetting settings, etc. Nothing worked!
I also contacted Apple Care and spoke to an Advanced Support Rep. She told me that other than starting over, the only thing I could try would be to use some unsupported 3rd party software. There are a lot of great jailbroken apps that do great things with restoring data like your call log, sms, etc, but you can't use them if you can't jailbreak the device you want to restore your data to.
Apple needs to add the way to backup your iPhone data with iCloud, not just the all or nothing setting they currently have. Starting with a blank phone isn't so bad if I can backup/restore my sms log, call log, etc independantly.
Everyone who reads this should recommend this by filling out this form: http://www.apple.com/feedback/