These commands will delete records from the tables field_data_comment_body and field_data_revision_comment_body, so be advised to make a backup first!
DELETE t1.* FROM field_data_comment_body t1 LEFT JOIN comment t2 ON t1.entity_id = t2.cid WHERE t2.cid IS NULL DELETE t1.* FROM field_revision_comment_body t1 LEFT JOIN comment t2 ON t1.entity_id = t2.cid WHERE t2.cid IS NULL OPTIMIZE TABLE `field_data_comment_body` , `field_revision_comment_body`
Heise has developed a solution to provide more privacy to users of social networks: http://www.heise.de/ct/artikel/2-Klicks-fuer-mehr-Datenschutz-1333879.html
To use this script with Drupal, there is the module »Social share privacy«: http://drupal.org/project/socialshareprivacy
To prevent the screen saver to turn on and lock the phone during navigating with OVI maps, open the settings (wrench in main menu) and select Navigation, then Backlight. Set this to always.