suddenly missing posts/data old posts resent to subscribers

Hello WP forum,
I’ve noticed a lot of strange activity on my blog (blog.kylepierceillustration.com) and in my email today. Here’s what has happened via no willful action of mine:

– WordPress auto back-up received at 1:40 p.m. on 12/20/11 (Tuesday). I have scheduled for Sundays only.

– (3) Most recent blog posts are missing / deleted, and the images associated with each are no longer on the server. These include posts titled “Le tigre” (12/14/11), “Sad fruits are never in season” (12/9/11), and “Another night of inneraction” (12/6/11).

– (3) Older blog posts from over a year ago were resent today, with dates of 12/4/10, 10/18/10 and 6/24/10. I subscribe to my blog via email and received these three this afternoon in a single email, as did other subscribers.

– Emails to my account kyle@kylepierceillustration that had been received between 11/25/11 and 12/2/11 seem to have been re-received, resulting in duplicates for any I had kept in my Inbox. I contacted my host (JaguarPC) earlier this evening and am awaiting reply.

– The CyStats plugin has no data between 12/2 and today, 12/20, as if the days in between don’t exist.

Thanks in advance for any help!
Kyle