Ipsec / racoon rebooting every 24 hours

[rkuo]

Title says it all.  I believe this started happening when I switched from a native hard drive to just booting off a USB stick.  Anyone know why this is happening?

Sep 8 15:19:17 racoon: INFO: caught signal 15
Sep 9 15:19:08 racoon: INFO: caught signal 15
Sep 10 15:19:08 racoon: INFO: caught signal 15
Sep 11 15:19:08 racoon: INFO: caught signal 15
Sep 11 15:19:17 racoon: INFO: caught signal 15