my post, cateogries, plugin deleted automatically

few days ago I installed postie plugins and create new categories, then few post in these categories.
today I noticed that work done on that day and after, is gone. It seems to be reverted to that days state.

I am new to wordpress, but can confirm that posts still exists in db table with following changes:
post_status is inherit and post_parent not as zero.

I have repaired db but no help, also repaired using WP-DBManager

everything is ok before that day.
my bolg is at http://jobs.anomsoft.com