My problem is that when I write a posting and Wordpress

My problem is that when I write a posting and Wordpress logs me out while I am writing, I really have problems after re-logging in with adding photos, saving and publishing the post. It takes up to 30 Minutes to get back to normal, and that is time, I don't have. The page is not accepting any uploads and no saving. If I want to save my post, it only shows "Cheatin’ uh?". Actually I am so angry about that, because it crushes my time-plannings all the time.

I am really angry about that what seems to be a bug - but is there any way around that?