signal 15 recieved?

[saggy]

in trying to track down a issue with a dm500, in the logfile I cane accross this when the issue happened

Jan 08 17:13:47 192.168.1.3 Client <- Server: -- Sun Jan  8 17:13:40 2012
Jan 08 17:13:47 192.168.1.3 ----------------------------------------------------
Jan 08 17:13:47 192.168.1.3 000: 80 10 10 e0 70 a2 f2 c6 ff b7 7c 00 00 00 00 00  ....p...........
Jan 08 17:13:47 192.168.1.3 010: 00 00 00                                          ...
Jan 08 17:13:47 192.168.1.3 
Jan 08 17:13:48 192.168.1.3 [mg0] <- CW from newcamd xxxxxxxxxxxxxxxxxxxxx
Jan 08 17:13:48 192.168.1.3 [mg0] 178 msec -- Sun Jan  8 17:13:40 2012
Jan 08 17:13:48 192.168.1.3 ===== NDS ECM on CaID 0x0963, pid 0x0504 ======
Jan 08 17:13:48 192.168.1.3 prov: 000000
Jan 08 17:13:48 192.168.1.3 cw0:0 E0 70 A2 F2 C6 FF B7 7C
Jan 08 17:13:48 192.168.1.3 cw1:0 51 1B E8 54 F1 6D 7C DA
Jan 08 17:13:50 192.168.1.3 [mg0] stoping camd..
Jan 08 17:13:51 192.168.1.3 [mgcamd] signal 15 received

any ideas what caused this? restarting the cam made it work again but wondering why it happened........

[suma]

This is your router signal. Use Google to find what is signal 15 recieved