Hello everyone, I've got a WRT54GS v4 router that until last weekend has performed flawlessly with wired and wireless applications. I've had it up and running for approximately 2 months. Currently my network is configured with 3 wired PC's and 1 wireless laptop all connecting through the WRT which is directly connected to my DSL "modem". Of the three wired machines, I have QoS configured so that 1 PC has high priority, 1 PC has low priority, and the 3rd PC has no configuration (I assume that sets it somewhere between high and low priority). The WRT is using the most current version of the official Linksys firmware (v1.05.2) My DSL is a 3mb down/768 up service. My bandwidth is being throttled down to approx 768k down on every port/machine. If I reboot the router I will get full speed of approx 3000k for about 5 minutes and then it gets choked back again. After changing a configuration in the router the speed picks back up again for a few minutes (I assume due to a soft reboot after config is saved) and then drops back down. These speeds are being tested using the speed tester applet my ISP provides (http://personal.surewest.com/internet/speed_test.php). The speed change is very consistent. Completely deactivating QoS does nothing to resolve or improve the issue, nor does disconnecting every PC but 1 (I tried this with 3 different PCs with the same results). I've performed a hard reset on the device (hold rest button on back for 15 sec, unplug router while still holding reset, plug back in while holding reset, hold reset for 5sec) and restored the configuration to no avail. I've verified the problem is indeed with the router by connecting individual PC's directly to the DSL modem and thrashing the line with huge downloads that last 30+ minutes (ever downloaded 3dMark06? ). After each download, I've returned to my ISP's speed tester and I've been rock solid at 3mb. I've gone back to my old BEFSR41 (v1) router now. All 4 PC's - I've connected the laptop with a wire - have been connected to it for 5 or 6 hours with no drop in speed. The next step in my thought process is to try different firmware, but before I go that far I figured I would throw this problem out to you guys and see if maybe I'm being stupid and just overlooking something simple. Any ideas?