I was testing the IDN - Tamil. It was working with IE 7 and also IE 7 redering the punycode as Unicode in the addres bar. But Firefox 3.0, even thought it is released very recently, does not decode punycode back to Unicode and its shows the punycode in the address bar :-(
Becuase of this in Firefox 3.0, when we try a Tamil URL, it looks like our site redirected to somewhere else...
to try : http://சர்வேஸ்.blogspot.com