I have a 1043nd v3 that is working fine under 40134, but it's working as a wap (no dhcp) for the last 4 days without a problem. Memory does vary a lot without much work being done, but never to levels you show (the lowest level I saw was around 30MB or so). No freezes, no reboots, nothing. My advice is to do a full reset and configure from scratch, without forgetting to erase nvram.