Comment Its not a BUG! (Score 2, Informative) 621
As I see it, it is not a bug. International Domain Names are a standatd sind a while, already. The only problem is that some unicode characters look exactly like some UTF-8 characters and because of that, people can be "cheated".
But who needs IDNs??
In Mozilla/Firefox and maybe also in Thunderbird (if you download the about:config extension) IDNs can be disabled by using the about:config thingie.
Open your Gecko based brwoser and type "about:config" (without the quotes) and hit return. Search for "network.enableIDN" (without the quotes) and set it to "false" (without the quotes).
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Max
But who needs IDNs??
In Mozilla/Firefox and maybe also in Thunderbird (if you download the about:config extension) IDNs can be disabled by using the about:config thingie.
Open your Gecko based brwoser and type "about:config" (without the quotes) and hit return. Search for "network.enableIDN" (without the quotes) and set it to "false" (without the quotes).
--
Max