I noticed my DIR-655 started locking up every :30 or so and tells me this when I try and log into the router:
"Please wait...
The gateway is currently measuring your network connection.
Accessing this web page might have an effect on the measurement.
This page will refresh shortly."
Anyone have any idea what that means?

This lasts about 30 seconds as well as it drops all internet traffic and wireless devices while it does this.
I also noticed it no longer shows a log, statistics, connected computers, or internet sessions. After I restore factory defaults it stops locking up but still don't get any of that stuff...I was on 1.11 when I noticed this but upgraded to 1.20, then 1.21 with the same results...is this thing broken or is there some new trick to fix this?