I'll post my successes.. I already reinstalled my test zc with full utf-8 support( I had some troubles switching to Russian in admin). I will install back uri mapper and will make some tests again.. transliteration is actually a good idea, but my opinion is that it's better to keep the url chars in the language of the site( for example is it was entered Shirt(for english name) and Red-Shirt(for english uri), it's better to have Russian words in urls, they're better understood by search engines(so the uri for russian Red-Shirt would be Красная-Рубашка , as an example). :) I'll check if it's going to work, if no then maybe I'll find a way of changing the code to keep it exactly as it was entered in uri field.

thanks for reply.