EX58-UD5 - Event ID 117 JRAID Issue

[tseax]

My machine regularly experiences lockup during multimedia playback of
files on and off the jraid drive(s). During lockup a machine-gun-type
sound emanates from the sound device. After the event the hard-drive
light glows solidly for some seconds. Event Viewer registers an Event
ID 117 error:

The driver for device \Device\Scsi\JRAID1 detected a port timeout due
to prolonged inactivity. All associated busses were reset in an effort
to clear the condition.

Finally, playback resumes.

I see this error mentioned all over the Internet for at least a year
now, in both Vista and Windows XP, though mostly not, of course, with
this motherboard.

I've read that the RAID controller manufacturer is a relatively new
one and has many issues to deal with, this area being one of them.

Has anyone else seen this issue? Anyone come across a fix?

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Model Name : GA-EX58-UD5(rev. 1.0)
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M/B Rev : 1.0
BIOS Ver : f4
Serial No. :
Purchase Dealer :
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VGA Brand : ATi Model : SAPPHIRE Radeon HD 4850 512MB PCI-E Dual
Slot Fansink
CPU Brand : Intel Model : i7 Speed : 2.66GHz
Operation System : Vista 32-bit SP :
Memory Brand : Patriot Type : DDR3
Memory Size : 3GB Speed : 1600MHz
Power Supply : 900 W

JRAID - 2 drives in port multiplier mode (AHCI & IDE both tried)
JMicron Driver: JMB36X_WinDrv_R1.17.44WHQL