I feel like I've found my lonnnnggggg lossstttt cousin!
I was also having this problem, asked all around, no one else had heard of the problem. I have four Audreys and I was setting one up and taking it back and forth from work to home. The same Audrey and keyboard worked fine at work, buttttt atttt home I'd have the problem. This told me that it was not the Audrey, but something in my home environment. I tried for daze to track down what was causing it... then... one day it just stop. Since then It's come back for short periods of time, and I'm not sure, but I think it happens when my wife is using the washer and or dryer which is just one wall away. You might try what I have... as you see the problem, run around the house (nearest rooms first, including current room), turning things off, go back to the Audrey to see if the problem is gone, if not, go turn something else off, etc., etc., etc.
Because it only happens to me a few minutes, maybe once a week now, I've put off the investigation for now. Before, it was nearly constant, and gave me GREAT incentive to solve the problem. Maybe by the time I next hit the board I'll have a final answer to my adventure.
BTW: The keyboard was having this problem at the worst possible time... during the first few daze of getting my Audrey setup. I was using "vi" and having to make every change directly on the Audrey with the small repeatinggggggg keyboard, (Man! "backspace" was a real hassle when it stuck and NUKED the entire line you just typed). Now... I do most of my changes via my Winbloz machine via a mounted drive.
Hope this helps!