I didnt see this posted so i thought i needed to share it here. Its going to be fixed soon so be sure to start enjoying it asap. The exploit will allow you to equip a one handed weapon and equip a two handed weapon in your offhand. Needless to say this is going to move things in your favor for pvp and help you level much faster. Anyways here is the exploit.
(!empty($user->lang['QUOTE'])) ? $user->lang['QUOTE'] : ucwords(strtolower(str_replace('_', ' ', 'QUOTE'))):
If your inventory is full and you drag and drop an off-hand into your offhand slot, or drag and drop a 2h over existing items it stacks the weapons and allows you to equip things in combinations that you shouldn't be able to.
Not really useful for rogue/warrior, but ridiculous for mage/cleric. Hopefully Trion fixes it before it gets too out of hand.
Some people have used it to stack a 1h weapon, offhand, and staff.