RAID-0 temporarily hanging

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I just raided 2 WD 36gig Raptors on a Broadcom 4852 Raid Controller in
RAID-0 configuration.  This is my O/S disk with Windows XP Pro on it.

The Windows install went fine on it, but working in Windows, I notice
the raided drives will sometimes hang for maybe 4-5 seconds where I
can't even move the mouse cursor.  The hang will eventually clears up,
but this is extremely annoying.  It seems to happen when I'm
transferring a lot of data or accessing other hard drives on the raid
controller.  Is this common for raided drives?  I updated to the latest
firmware and Windows XP drivers.  

Thanks for any help or suggestions.

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