Automatically checked 0, updated 0

In my first D7 site my watchdog file is mostly filled with this message:
'l10n_update', 'Automatically checked 0, updated 0.'
The message comes from function l10n_update_cron() in l10n_update.module.
If I look at the cron settings: it should run daily, but the last cronrun was 1 week 18 hours ago.
The message like to appear at every requested node.
This makes the recent logs unreadable.
My solution: check first whether there is something to tell:

    if ($checked || $updated) {
      watchdog('l10n_update', 'Automatically checked @checked translations, updated @updated.', array('@checked' => count($checked), '@updated' => count($updatedwatchdog)));
    }