Mobiviki,
Sounds like it might be an issue with you connection. In the past I would write posts in a text editor (notepad, word, or similar app) and copy and paste the content into the WP page editor or where I want to see it. This gave me an opportunity to prod read first and kept my connection from timing out before I was done with it.
I’d try relishing my Firefox browser or even re-starting my machine just in case before resuming posts.
Hope this helps!
