I know there are already topics here about the low wan speed issue. Unfortunately I did not read/find a proper solution.

I purchased a DIR 825 (Hardware Version: B1 / Firmware Version: 2.00EU) because I have read in several tests that this router is very fast!
I have a 50 Mbit/s connection and uses an Ubee EVM3200 cable modem.
If connected directly to PC or 3com giga switch internet speed is great (50 Mbit/s DOWN).
But if connected via the DIR-825 the download speed drops to 30 Mbit/s or less and is very unstable???
I have tried: disable QoS Engine, disable Automatic Uplink Speed (SET Manual Uplink Speed), disable firewall, set WAN port speed to auto, 100 and 1000 Mbps.
Nothing seems to help.
I really hope that this problem can be solved soon (and I am not the only one here!).
Please Dlink give us an answer...
I am very disappointed for now....

Thanks