That sounds like the two week reboot that BT do.
Same with the HH4A:
11:12:42, 15 Jul. (1218010.920000) PPP LCP Send Termination Request [User request]
11:12:40, 15 Jul. (1218009.050000) The system is going DOWN for reboot.
11:12:40, 15 Jul. (1218009.050000) OpenRG is going for reboot by IPC command
11:12:35, 15 Jul. (1218004.050000) OpenRG will go down for reboot in 5 seconds
This is normal, well ours has done that every two weeks since we have had the HH4A, it can be very annoying especially when your online playing a MMO.