As someone noted, this blog and my personal blog have been down for a couple of days. No terrorist attack, no atomic bomb, just a new plugin (Simple Tags) who decided to fight against an other plugin (Gengo) previously installed.
Unfortunately I took a lot of time to figure out the problem, mainly because I’m not the expert of WordPress (now I am), and I got the answer from the Gengo forum, and from another unlucky guy who faced this issue just a couple of weeks before me. I’m not going to apply his solution now because I’m too happy to see everything working again.
And I’m also happy I learnt something about the Gengo plugin. E.g. Gengo uses the following tables in the WordPress database: wp_languages, wp_post2lang, wp_summaries, wp_term2syn, wp_synblocks.
And also that if you re-import your posts and comments using the WordPress XML file, WordPress will not reinsert the posts with the same number and as a result it will be in a mess for the translations.
Update
It works. Now this blog is running both Gengo and Simple Tags.

Siccome ritengo questo tema sia diventato abbastanza usabile, ho pensato di pubblicarlo: ora il tema (
linux