encoding utf8 "\xA0"

I have a problem with my temporary site http://bardzo.dobra-woda.waw.pl/
this site can not be validate by with http://validator.w3.org/ , because of the problem with encoding.
The error was: utf8 "\xA0" does not map to Unicode.
What can I do? Is it my fault?

Hello,

Most probably it is a problem with encoding used by your editor: http://stackoverflow.com/questions/3034 ... with-utf-8

Thanks for answer.
But I have not found a solution. I tried to change the settings of the editor and nothing, changed to another editor and also nothing. I don't know what to do next, my life is in ruins.

And did you resaved your files and removed any strange characters from the beginning of the file? When you are changing the encoding, some weird non-unicode chars can appear at the start of the file and you should remove it before resave.