kmail doesnt correctly display html emails

[Ze]

I use mandrake10.0 with kde.
Kmail doesnt display correctly many html messages, and even sometimes display 
these html emails like they were empty, but when i use evolution these same 
emails are well displayed.
Also the email appears as unknown.
I have tried with all kind of options to see if kmail would display correctly 
this emails but nothing.

Any help tp fix this?
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