Okay, I am at my wits, here. Every damn time i connect to a irc chat channel or downloading torrents under heavy loads, and uploading simultaneously, the damn router drops random connections. WTF, dlink...do something about it. Every day I experience a random connection lost. I should just Return this hunk a junk hardware and go with another provider. man what great customer service. 
I have posted several times about this issue, and none of the procedures and suggestions work, other than revoking my firmware back to 1.15 which will void my warranty, which i think is a bunch of horse sh** just so this "random drop connection lost" would stop haggling me.
I was at wits end, too, and everything I tried was not working. This was back in the day when upgrading from 1.15 (which was on the device) to 1.20 made it a permanent upgrade.
I bought the router at a local Best buy, and it was a Rev A model, and it gave me nothing but fits - so much so that, after complaining about my issues (which were massively dropped connections, but rare random reboots) I RMA'd my device.
I was disappointed to get a Rev A model back, as I figured the Rev
A2 would significantly improve my performance, but...
I can tell you right now - I am running 1.22 NA on this replacement, and it works
beautifully. So much so that here are my most recent statistics:
LAN StatisticsSent : 17028350 .
TX Packets Dropped : 4 .
Collisions : 0 .
Received : 9630383 .
RX Packets Dropped : 0 .
Errors : 0 .
WAN StatisticsSent : 9624890 .
TX Packets Dropped : 0 .
Collisions : 0 .
Received : 34210002 .
RX Packets Dropped : 0 .
Errors : 0 .
Wireless Statistics Sent : 270823 .
TX Packets Dropped : 27789 .
Received : 170553 .
RX Packets Dropped : 1288 .
Errors : 4439
I expect to have issues with my wireless - after all, I am running N only, and I have a DROID (that supposedly only supports wireless G) connecting to it for testing when I realized that my DROID supported connecting to an N router when the router was broadcasting wireless connections at 2.4 GHz.
Trust me - RMA your puppy *before* you decide to return it. You'll be happy.