boot fails with panic: ffs_valloc: dup alloc

[Brad Kowalczyk]

Hi

I woke up this morning to my FreeBSD box rebooting
and then displaying:

panic: ffs_valloc: dup alloc

before wanting to reboot again.

I knoticed some warnings about filesystems not being
properly dismounted and at the very start some message
that looks like it says that there is a syntax error
in the bootloader config or something (it scrolls by
too fast for me to get a good look)

I am presuming a have a corrupted file system?
Any ideas on how to get this fixed?

TIA,

Brad