This blog has been down for few days, I've been so busy that I didn't try to fix it till today.
First I was extremely concerned about security as I had a security update not installed in drupal, but fortunately this wasn't the case. When I checked the apache error log I found this:
PHP Fatal error: Call to undefined function taxonomy_node_get_terms() in /*******/sites/all/modules/tagadelic/tagadelic.module on line 172
Strange, I didn't change anything in the modules lately, not even upgrading tagadelic, and taxonomy is a drupal core module so what the hell has happened?