It still works fine when I use my laptop (XP, 3945 abg) to connect to the internet.
As soon as I boot my desktop (VISTA, Dlink DWA 547), the router fails. In other words, even my laptop loses its connection, and if I look at available networks on my laptop, I do not see the SSID anymore.
Resetting the router works until my desktop tries to connect again.
To me it is obvious that my desktop is causing the problem, but I need to know what on it is causing this.
Is your desktop connecting to the router via wifi or ethernet?
I think you mention wifi.
Only thing I can think of off hand is your adapter has gone bad, and is broadcasting a loud powerful signal blinding what your laptop can see.
Just a guess at this point. With your desktop on, can you disable your wireless adapter and see if the problem ceases?
If I disable the adapter, no problem occurs on the router.
What I did, that seemed to make some difference, is that I downloaded the "latest" DLINK driver from the Australian site. That seemed to help as it allowed my desktop to connect to the router, and it now kills it only once in a while. If I reset the router, the desktop is able to reconnect to the network. Really strange.
I've read on the internet that I should try shutting down the security of the router and then see what happens. I'll try that soon enough.