IE7, IE8 and IE9 zero-day exploit
theregister.co.uk
theregister.co.uk
Browse Happy is the only one I know of.
If you don't live anywhere near Japan, nor have configured your OS/Browser for this language, I would guess their system for detecting certain region-specific IP's is outdated or broken.
I think they're poorly checking Accept:
There is probably an opportunity here to create a firefox or chrome extension that makes the basic UI Mimic Internet Explorer exactly so people don't notice.
Or easier yet, just install Chrome Frame.
https://technet.microsoft.com/en-us/security/advisory/275776...