panic, page fault while in kernel mode (firefox related)

Hi,

I got kernel trap 12 with 'Address out of bounds' error (is it considerable?),
while running a firefox-bin on CURRENT as of March 18. It's a x86 UP.
It's not a flash related as in neighbor topic :p (simply because I use
the flashblock
plugin). It silently panicked without any foreign additional effects
like a heavy load
anymore while I worked in another virtual window.

Briefly:

Unread portion of the kernel message buffer:
kernel trap 12 with interrupts disabled

Fatal trap 12: page fault while in kernel mode

#13 0xc06f2174 in syscall (frame=0xd6099d38) at
/usr/src/sys/i386/i386/trap.c:1010
        params = 0xbfbfd210 <Address 0xbfbfd210 out of bounds>


Further debug info from kgdb session is attached.
Ask if you need more information.

wbr,
pluknet