Some of my Skydrive files have been regressed to much earlier versions (i.e. they lost a lot of the data that was in them) as of 10/10/13.  They are showing up on the Skydrive tile on the Windows 8 Start Screen as having been added on 10/10/13.

I really need the lastest versions of the files back, but I'm helpless to do anything about a Skydrive issue.