Not sure why this was moved to the DNS forum category...
Never seen this problem on DLink or Linksys routers. Or Speedstream modems for that matter.
Are you only getting this on that one particular Belkin router?
What is the Model # for the router?
A couple interesting things I noticed from your screen shot:
- The 'top bar' is loaded, that tells me the page is using frames. And the default / index / frameset page loads correctly.
- A 404 on the favicon.ico usually does not block then entire page from loading... I would expect that from a 404 error on the HTML page...
A clue maybe?
How about firmware updates for the router? Maybe there was an error in the built in HTML pages / log-in form handler code.
Maybe the router is 'bad'? I've seen bad routers do all sorts of strange things.