I have recently installed Windows 8 on my Desktop PC, having previously tried it 4 months ago.  I reverted to Windows 7 for 4 months, but have now gone back to Windows 8.  Since I have installed Windows 8 this week, I have noticed that SkyDrive has not saved any changes to documents made over the last 4 months.  I have checked my Windows 7 laptop, and logged in to the SkyDrive website, and that too has reverted to documents with a timestamp of March/April.  Please can someone help me as I have lost a lot of work!  Thanks