This is usually generated in my RT-N16 and then crash. Under v119 TomatoUSB Shibby Code: user.err kernel: KERNEL: assertion (!tcp_write_queue_empty(sk)) failed at net/ipv4/tcp_timer.c (285) The cause is unknown but I use it only for tranmission and pyload (all routing capabilities is disabled) via optware. N16 is connected to N10u (which is working fine)as the main router. Once the router crashes, everything is unavailable from transmission to pyload, from webui of tomato and dropbear. But N16 is still pingable by its static IP address. According to logs, that is stored under my cifs partition (mounted under N10u storage since Id rather store my logs there) and the certain error always pops up when router crashes. Any help will be appreciated.