Error message

Whenever I try to click a product from the main overview pages (ie www.listal.com/view/movies ) or a tag from the "Top Tags" page I get an error message:
It's been like that since late yesterday (though less than 24 hours).
A critical error has occured ({my ip address, I removed it})
This error has been logged and will be dealt with asap.
It's been like that since late yesterday (though less than 24 hours).

Seems to be fine now. :)