I am using Windows Live 2011 for email, contacts, and calendars.  Approximately 10 days or so ago, I lost all of my calendar events and appointments, and some of my contacts.  Several of other contacts reverted back to old data that had been upgraded, i.e. new email addresses for people.  I spoke with Microsoft tech support and also chat room with tech support without any help.  I also noted that this occurred around the last Microsoft "auto" update done on Jan 9th.  Any help would be greatly appreciated.  I'm at a lost.

P.S.  I have used Windows Live 2011 for the past 6 years and had little problems.  I do not have Windows Essentials.

Roy