Ok, so I don't have a great amount of experience with network related issues and while looking into a reported problem for a local business I came across a really odd problem that I've never encountered before. The configuration page for the router will not load at all. They mashed in the http://192.168.2.1/ address (which worked perfectly fine 6/7 months ago when it was last accessed), we watched the page try to load for 2 minutes and then the usual 'unable to load page' screen came up. They need to get access to it to add a MAC address for a new wireless device (they have MAC filtering turned on). Now the computer is connected to the router via Ethernet and the Internet is working perfectly fine, but the router's own configuration page just refuses to load. They tried unplugging everything, switching off the router for a while and even pressed the hard reset button (though I told them there's a chance they won't be able to get back in to re-apply the ISP settings, oddly the router didn't do a hard reset and the settings stayed) but nothing made a difference. Has anyone ever come across something like this before and know any method of getting the config page to load again?