I have installed a 2820 and updated the firmware to V3.3.0. The filters are configured to have open access outside working hours and limited access during working hours and this works fine with one exception, that being if users have accessed a site outside working hours so long as they do not log off that site then they still have access to it during working hours. An example being some online game sites which are used at lunch time and continue to be available in the afternoon. Is there any way of stopping such access once the scheduled 'open' time has expired?