Who is responsible for throwing away my posts?

For the third time recently, I spent about 30 minutes composing a post, adding pictures, editing-out my typos, and eventually pressing "Post". Even though I was logged in before I started, I was redirected to a login page. Perhaps I type too slowly, and my session timed out? Whatever: I logged in again, and them was redirected to a blank New Thread page. All of my carefully-composed content is gone, apparently forever.

In creating this post, I entered the title and one line, and clicked post. That worked! Then I edited the post to add the rest of the content.

Does anyone else have similar issues? Or is it because I'm an electrical engineer?