2007-08-24 theage.com.au problem

 What might cause web browsers on different machines to get different results from trying to access the same web site?  Trying to access theage.com.au from Gonzo, I get a page with the words "It worked!" and nothing else...  ...but other machines on the network (one Linux, one Windows, both using Firefox) accessed what looks like the proper site.  And we've had a problem with a ComicGenesis-hosted site, although that may or may not be related. But it's equally mysterious.  Ok, I've just tried it with Konqueror on Gonzo, and I get the same results as Firefox. So it seems to be machine-related.  On gonzo, www.theage.com.au resolves to 216.234.246.150 = 96.f6.ead8.static.theplanet.com; on Mokey (where I get the proper site), it resolves to either 203.26.51.42 or 203.58.234.68.  ...with no associated domain name, and the pings don't return.  Is there any way to figure out what DNS servers are being used to resolve a domain name?  nslookup says the "server" for Gonzo is 166.70.63.3, which seems to be at xmission.com, which is where it is supposed to be...  nslookup on Bunsen says the server is Gonzo, which is also correct... but why would Gonzo give a different answer than what it gets?  I restarted dnsmasq, and now the address is resolving properly -- but I'm still getting the wrong page on firefox. And Konqueror.

The two web pages I have tried loading are:
 * http://theage.com.au
 * http://www.theage.com.au/articles/2007/08/23/1187462435439.html?from=top5

The machine-dependence of this problem, as well as the general description of the web page received when the correct page is not, are remniscent of the 2007-07-27 ComicGenesis problem.