Problem with RAID5 and USB2 using 2.4.27

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Have a 4-disk RAID 5 array of 250Gig HDs that I am looking to use for
performing video capture and editing. Two of the disks are internal,
and two are external and connected using a USB2 card. Running under a
Debian installation with a 2.4.27 kernel, I can capture for a few
minutes, but then I start to drop frames, and the percentage dropped
gets worse as time goes on.

Would going to a 2.6 kernel where I gather there are some additional
features available "fix" this, or do I need to look at moving to
firewire or something else? I'm reticent to move to firewire as I was
having troubles with my system "forgetting" that it could talk to some
of the disks after a reboot, but if I have to then I guess I have to
:-)

Thanks,
Ewan
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