On July 7, 2011, the armour restrictions will be enforced. You should already start to reorganize your equipment. As soon as the restrictions are enforced, armours which have got a difficulty value that is higher than your defence attributes, will loose their effect. You can easily check if you have got an armour with a too high restriction in your character's attributes menu. If it shows an asterisk * at your defence attributes, you are using an armour with too high restrictions.