I did what you said and disabled UPnP and low and behold the computer in my bedroom showed a message that another computer on the network has the same IP address. This must be the problem. My router started to lose the radio the minute I bought a new laptop and put it on the network. Somehow when I added it to the network it used an IP address that another computer was using causing the interference. This was my second router as I returned the first one due to the internet dropping so I knew it was not overheating and figured it was a firmware problem. Two days have passed without the problem and I wonder if I re-enable the UPnP now the router would remain stable. I really can't belive D-Link has no fix for a problem so many people are having ? Really stupid customer service on their part !
Hi ronhondo,
Disabling UPnP will stop Instant Messenger programs that depend on UPnP from working.
Go to all Computers. Go into Services.
Plug and Play Service should be set to Manual.
SSDP Discovery Service should be set to Manual.
Universal Plug and Play Device Host should be set to Automatic.
Reboot each computer after making the changes. Check connections over the next few days.
I believe that you or something may have changed UPnP Services because of a Security Threat.
With the Router's Firewall on, I believe you don't need to worry.