Raduga stopping strangely by it's self

We use Raduga for a 24 hour Christian Radio Station. For some reason the system stops like it knows when someone takes a break out of the air studio.
Today like 10-12 other times, it stopped and displayed an error message. Pressing "P' or the start symbol didn't start it. Our second computer we record announcements on also displayed an error message. Both computers are connected to the internet to keep the clocks accurate.
Since this has happened so many times, is there any way to tell if anyone is hacking into our system?
Thanks!