P4P800 and bios 1009.006, lost boot from hard disk on VIA raid

I have problems with 1009.006 bios.
Because I have three optical devices my HD drive is connected through
VIA raid. I didnt setup raid field. On 1st IDE is dvd rom, on 2nd IDE
are dvd-rw and cd-rw drives. With bios 1008 final no problems at all. I
can boot from HD without single problems, raid bios is 1.12.
Yesterday I flashed with asusupdate from 1008 on 1009.006. No flashing
problems. Everything works fine, my 2.4 goes on default voltage on 3.0
with fsb 250. Prime95 runs for 4 hours without problems. I have Corsair
XMS 3200C2 2x512mb memory.
This morning on boot first I got blank screen, then reboot and boot
sequence pass through, all drives was recognized, I notice new raid bios
v1.40, hd drive was also recognized and then message like ...set your
boot device and reboot or something like that. I went to bios, put speed
back on default value, load setup defaults, reboot and got same message.
I tried few times more then reflashed bios with old bios 1008 and
everything is fine, I got winXP again.
My suspicions goes on VIA raid, something is not good or maybe it's
necessary to reinstall XP again (I cant believe in that soultion), or am
I doing something bad with flashing?
Funny thing is that immediately after rthe flashing with new bios komp
works fine whole afternoon, but I didnt try cold boot.
Sorry for long post.
Any idea?

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dV
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Thanks God, I'm an Atheist!
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