I just opened an interesting issue [1]. There appears to be collisions in an user reported random collection loop. This could be a disturbing issue, and I've sent an email to Atmel for support. But, as I recreated the driver from scratch, there could very well be a bug in my code and/or I'm using the device wrong.
I will try to reproduce it and confirm it; and investigate. But obviously, I want everybody to know about the issue.
If you happen to come across it, feel free to share the results with the list.
Josh