TeachIT

Hi all, We have a strange problem with ABTutor V5. It used to work perfectly, blocking absolutely everything we needed. However now, the Internet blocking just does not work. I have come to the conclusion that it must be something to do with our ISA server at work as I can block web sites at home. Has anyone else had this, or could anyone point me in the right direction as to what may have been done by an ex IT Support guy we had at work. Thanks Alistair