I am having the same problem, the first day, 1-2 disconnects, the second and third day, disconnection every 15-20 minutes. I reset my router to factory settings and enabled VPN again, disconnection every 1-2 hours still.
I am using Rogers and SecureIX works for me too, however, it will disconnect every 1-2 hr and I have to connect again manually. Is there a way to set it to always on? BTW, when does the SecureIX beta end and how much will it cost after? Edit: It seems like ZoneAlarm is what causing all those disconnections, is there a way to configue ZoneAlarm for SecureIX?