I was on the point of giving up BL today.
I'd tried fives time to load a short review of "The Wrong Unit" and constantly failed because, when I pressed "Post" all I got was a message saying "Are you sure you want to leave this page. All content will be lost."
Then I wondered if anything would be different if I used a different browser.
The machine I was using had IE on it as well, not a browser I would normally choose, so I gave it a try and it worked. It was still a little slow, but it worked.