XF 1.1 Posts Deleted Automatically

[Syed Jahangir ALi Bukhari]

Yesterday I made a feed, today when I checked the forum all posts are deleted just titles of posts remain dates of posts also changed, users also changed to admin.
users who posted
http://www.myclubasia.com/members/sidra.2/#postings
http://www.myclubasia.com/members/sasha.41/#postings
and its showng like this
http://www.myclubasia.com/forums/fashion-glamour.15/

 

[Jake Bunce]

I believe the posts in question are on page 3 of the forum:

http://www.myclubasia.com/forums/fashion-glamour.15/page-3

 

[Syed Jahangir ALi Bukhari]

but when you open the post it is empty (index)and user is changed along with user image

 

[Syed Jahangir ALi Bukhari]

those were all duplicate posts and I deleted all