Speedy problem with sending request

When I write long text article in Wordpress and then start submitting the article, I'm peevish with speedy because sending request process is very long then appear error note "Problem Loading Page" from my browser. Arrgggghhh... But in blogger I don't meet this error. That is why I prefer to use blogger for posting my article.

The error also appear if I upload my document to file hosting.

Why it's happened?? What's the problem about speedy??