skyjumper:
Okay, I am going to stop my serial read-write process. Its been running non-stop since I started it.However, this does not prove much. Maybe Atmel fixed the bug, but there are some chips out that still have it. Maybe I just didn't write code to trigger it. The high pass filter may be a good idea, just in case.
The errata is empty in the datasheet. I never see any chip that is perfect!