SEO url duplicated problem

Hi guys!

During 1.5.6.1's OC if the products url accents writing, the product will be duplicated in the google.
In addition to the Canonical member put it clear that what the original url, how can this be sold?

example:
myshop.hu/camera/EOS5D-fotokamera
or
myshop.hu/camera/EOS5D-fótókamera
or
myshop.hu/camera/EOS5D-fótókámére

both give the same product.

Big bug.

the live site:
hxxp://jatekwebaruhaz.eu/bebijatekok
and
hxxp://jatekwebaruhaz.eu/bébijátékok
same product, google GWT indicates the duplication.

Pls help me. Thx.

so don;t use the same words!