I've had this router (WPN824 - no suffix so V1)for about 10 months now and on my laptop using wireless 802.11G I have consistently got 10Mb at
http://www.speedtest.net/
As 10Mb is way faster than anything I've had before and I am to lazy to do all the testing to find out where the bottleneck is I have been happy but always slightly niggled that I wasn't getting faster (but not enough to do anything about it)
I had the router st to check for updated firmware automatically and it never found any but today I did a search and found the latest firmware is V2.0.120_1.0.15 (released May 23 2007) - I was still on 2.0.15
After downloading the latest firmware and installing it I now get
Moral of this story is: Don't rely on automatic updates - if you're still on the older firmware go and get the new firmware now!