raid5 saga (1, 2) continues - one more disk has died.

new ad6 238475MB "WDC WD2500JB-00REA0" for $70

update: following crash:

Apr  3 03:24:42 heart /kernel: vinum: raid5.p0.s2 is up by force

shortly after

panicstr: integer divide fault
panic messages:
---
Fatal trap 18: integer divide fault while in kernel mode
instruction pointer     = 0x8:0xc02fbfae
stack pointer           = 0x10:0xca842c5c
frame pointer           = 0x10:0xca842cc8
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 16 (vinum)
interrupt mask          = none
trap number             = 18

with backtrace:

#0  0xc01747fa in dumpsys ()
#1  0xc01745c4 in boot ()
#2  0xc01749f8 in poweroff_wait ()
#3  0xc02ea5bf in trap_fatal ()
#4  0xc02e9f83 in trap ()
#5  0xc02fbfae in __qdivrem ()
#6  0xc02fbe83 in __divdi3 ()
#7  0xc23e2f17 in ?? ()
#8  0xc23e3757 in ?? ()
#9  0xc23e17bf in ?? ()
#10 0xc23e19ba in ?? ()
#11 0xc23e461d in ?? ()
#12 0xc01af240 in spec_ioctl ()
#13 0xc01aef51 in spec_vnoperate ()
#14 0xc02795c1 in ufs_vnoperatespec ()
#15 0xc01ab76f in vn_ioctl ()
#16 0xc0184536 in ioctl ()
#17 0xc02ea879 in syscall2 ()
#18 0xc02de195 in Xint0x80_syscall ()
Cannot access memory at address 0xbfbffd10.