Last week, the company I use to host my website upgraded from PHP 5.2 to PHP 5.3. When this happened, my web site went completely blank :-( . I couldn’t get anything to appear, and couldn’t even log in to the dashboard.

However, after enabled PHP errors, I discovered that the “WordPress Automatic Upgrade” plugin was causing the problem.

I renamed the appropriate plugin folder through the host’s admin site, and then my site worked!! :-)

Looking at the plugin website (http://wordpress.org/extend/plugins/wordpress-automatic-upgrade/), it appears that the plugin is only compatible up to WordPress 2.7.1, not 2.9.1!!!

Hope this helps other WordPress users :-)