I also have had this EXACT problem. Works fine for about a month. I populate the blog, everything is good and one day I get the welcome screen.
Looking at the database shows that the wp_options and the wp_posts are “in use”. I can’t access either of them.
I’ve had the exact thing happen on 4 blogs now. Any ideas at all? The only thing that my tech people can come up with is that I had set the content file to 777 instead of 775. They aren’t seeing any activity other than mine.
I’ve had the databases so wrecked, I had to start over. Only once we could fix it.
HELP!!!!
My version of WP is 2.6.2. Aside from the permissions – is there something else I could be doing to open myself up to hacking?