Due to a hardware fault on a single server which was temporarily hosting a number of internal systems, some users may have seen an issue on Saturday night.
Systems affected were RADIUS authentication for ADSL (users who were connected were fine, though those that had to reconnect would have had problems), one of our DNS Servers and the Merula webite and portal, since these were all being hosted as virtual servers on the same physical box until the new hardware for each of these, which we were in the process of installing that day, went live.
The cause turned out to be two faulty Hard Drives and appears to be due to a bad batch of drives. Service was restored to some degree by about 2pm and after that we moved the services and servers, one at a time to their new hardware. We believe that all services are now running fully but if you are seeing any remaining issues please call or email support in the normal way.