I haven't been told to shut up about anything either.
I also don't have any problems with my AmigaOne-XE G3 800 MHz. I have really cheap memory in it and it runs faultless with DMA on.
By the way; if you're an A1 owner then there is only 1 mailing list that's of any use and that is the A1G3Dev mailing list you can get subscribed to when you have the board.
If there is 1 thing to complain about it's the lack of a search function.