I've just loaded tofu13c ...of course, before this I set Factory Defaults... flashed and once more... I set DHCP Static and set IPs reffering to MAC adress for three clients of my LAN+WLAN ( two wireless and one wired). I set my ISP data, QoS rules for ports(+ manual upstream 240Kbps (my conn : 256)), ports forwarding...WPA PSK encryption and nothing more. The connection with router breaks many times during the day... sometimes... in very short timelines...simetimes one time for 3 hours. I really don't know why... On my HyperWRT v3 series there wasn't such trouble. What could it cause ?