Painfully slow data transfer on Airport Extreme (Start and stop over 6 hours for 200 megs)

I've had my airport extreme set up for 2 years with 2 hard drives attached for my files.  I have never had a problem with transferring to them until this morning.  I have been unable to transfer anything to the drives at all.  Every file I have attempted starts, will get about 10% through the transfer (regardless of size) and hang.  I left one file "transferring" to see how long it would take - a 183 meg file took over 6 hours!
I have restarted the APE, the drives, the computer and check all connections.  Nothing has changed from yesterday to today.
I don't even know where to begin with trying to figure out this issue.  Can someone please help?

The new Airport Extremes and Time Capsules suffers from terrible performance over the 5GHz band and it's a problem that not only affects me and you, but hundreds of thousands of other owners.
Nobody knows if it's a firmware problem or the Marvell chips inside that's the problem, and Apple hasn't said or done anything for months.
I'm still hoping for a firmware update to solve this, but if it doesn't get fixed soon enough, I'm gonna return it and go back to backing up to wired disk and my rock solid Airport Express.
Not the happiest answer, but at least you have a clue now.
Cheers,
Koski

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