unicode/ascii weird behavior

Hi

I dont know if this problem has been addressed, (or if I'm causing the
problem). But I had a unicode problem when I upgrade wxpython. So I tried
both of them (ascii and unicode) and this is my result :

if I download/install the unicode version, unicode does not work
and if I download/isntall the ascii version, unicode work

any idea?

win XP
python 2.3.5
wxpython 2.5.3.1

Thank you