I´m receiving that message every one or two days from my 515 Pix and it Crash every time, its IOSversion is 6.3(1) 16/32 in memories and my router has the 12.1(3)version.
Recently I configured VPN services and installed a mail server on DMZ interface.
I´ve been watching many examples and evering looks well, in fact the email services and Remote VPN´s are working fine.
Can somebody tell me what should I do ???