[c-nsp] Both my borders crashed?

[Shaun R.]

Both my border routers look to have crashed at the same time.  Anybody know 
why from this error?  If not how can i find out what happened?  Both routers 
are 7206VXR-NPE-G2's


border2 uptime is 2 days, 19 hours, 20 minutes
System returned to ROM by error - a SegV exception, PC 0x13EF030 at 05:05:00 
UTC Sun May 25 2008
System image file is "bootflash:c7200p-advipservicesk9-mz.124-15.T1.bin"

border1 uptime is 2 days, 19 hours, 19 minutes
System returned to ROM by error - a SegV exception, PC 0x13EF030 at 07:51:26 
UTC Fri Mar 30 2001
System image file is "bootflash:c7200p-advipservicesk9-mz.124-15.T1.bin"