After updating from 1.7.3 to 1.8 my ru_RU transtation became broken. 
On my dynamic main page, under the post with 1 comment I can see “%d комментарий”, instead of “1 комментарий” (i.e. “%d comment” instead of “1 comment”.
(Version 1.8.1 seem to use the same ru_RU translation files as 1.8.)
It looks like this is the result of changed .po &.mo files. For now, I’m going to use translation from 1.7.3.
I’m not sure how do i contact translation author directly, so I’m just posting this here.