Hi, I have an E3000 running Tomato Firmware v1.28.0495 MIPSR2-Toastman-RT-N K26 USB Ext and I tried setting up QOS with classes but found that too much trouble since I have a few voip only ATAs that need their traffic prioritized. So I setup QOS like so: Max DL BW: 30000 (optimistic) Max UL BW: 950 (guaranteed) ip range=192.168.1.2-99: dlrate=1000, dlceil=6000, ulrate=300, ulceil=700, priority=normal, tcp/udp=nolimit ip range=192.168.1.100-110: dlrate=180, dlceil=400, ulrate=180, ulceil=400, priority=highest, tcp/udp=nolimit My voip boxes are in the 100 to 110 range. I've tried "Default Class rate/ceiling for unlisted IP's" enabled and disabled and both experience the crash. Usually the router will hang (become non functional) after a few speed tests while talking on voip. After a few reboot attempts I'll be able to connect with the router and disable QOS. The only thing from the logs that looks relevant is: Code: Dec 31 19:01:28 potato user.warn kernel: HTB: quantum of class 10001 is big. Consider r2q change. Dec 31 19:01:28 potato user.warn kernel: HTB: quantum of class 10001 is big. Consider r2q change. Dec 31 19:01:28 potato user.warn kernel: HTB: quantum of class 10100 is small. Consider r2q change. But I can't figure out what to do. Any help would be appreciated. Thanks!