I’ve had all my posts and pages wiped out on two WP blogs hosted on hostgator. I asked for help and they got them back up up again by doing a DB repair.
When I asked how and why that happened they couldn’t say but “wordpress does that sometimes”.
It’s definitely a bug – but where and how to fix it – I don’t have a clue.
The only thing I remember doing was opening a post to edit it, then switching to upload media window before doing anything to the post, dialogue box – “are you sure you want to navigate away from this page” (presumably because I did not ‘update’ the post I opened) I say yes, go to media files, nothing there, back to posts, nothing there, go to pages, nothing there. All wiped out.
I work only on Linux platforms although that shouldn’t be a factor, should it?