After WordPress export/import, the blog sometimes loads an empty page

I'm talking about http://henrich.ro

Recently I've changed the hosting. It's a WordPress blog. I copied the files through FTP, then exported the database from the old hosting via the WordPress admin panel and imported on the new hosting.

The blog sometimes loads an em开发者_如何转开发pty blank page, a fast load, without any error on the log files.

It is because i just copied the files and haven't installed a new wordpress before imported the database and files? I avoided this because I have lots of plugins installed with particular settings.

Any idea?

Here is the documentation for switching hosts with Wordpress. It has a step by step list of things to check.