So Ralink have some fundamental bug in their DMA mechanism....Actually I did notice this DMA issue does occur less frequently than the TX issue. Im happy to run any tests that are needed to get this code more robust. Thanks. Michael Ivo Van Doorn <ivdoorn@...> writes: -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html