[imp] Configure UTF-8 viewing in Horde Imp

[William Krick]

Quoting Jan Schneider <jan at horde.org>:

>
> Zitat von William Krick <krick at 3feetunder.com>:
>
>> My host recently upgraded my Plesk installation from 8.6 to 10.2  
>> and in the process my installation of Horde Imp webmail got upgraded.
>>
>> Something now appears to be configured incorrectly as I often get  
>> this warning at the top of my emails...
>>
>>
>> This message was written in a character set (utf-8) other than your own.
>> If it is not displayed correctly, click here to open it in a new window.
>>
>>
>> My server is running a version of RedHat linux.
>> When I run this command...
>>
>> locale -a
>>
>> ...there are three results for en_US...
>>
>> en_US
>> en_US.iso885915
>> en_US.utf8
>>
>> ...so I think the server is configured correctly.
>
> But are you *using* US English? Or do you happen to use Firefox 10 or 11?
>

I was using Firefox 10 and recently updated to Firefox 11.

I tried IE7 and I don't see the warning about UTF-8.

Is there a compatibility issue with Firefox?