Is that the default WordPress widget or something you have installed?
If it is the default “recent comments” widget from WP + you are using a Russian version of WP – it is in the translation (.mo) file. You cannot edit a .mo file, you need the .po file to make your edits in the translation.
If there is another plugin – you need to edit the plugin (or its translation).
Yes, this is default ‘recent comments’ widget.
I’ve checked .po file (Russian .mo & .po files: http://lecactus.ru/download-manager.php?id=106), there is no “на” or “on”.
In English “на” sounds “on”. I think I have to modify the file which contains “on”, but I can’t find it.
Don’t post direct link to downloads – read what the guy says: “…размещение прямых ссылок на файлы запрещено, переразмещение на файлообменники запрещено, оставляйте просто ссылку на эту страницу…”
And in the ru_RU.po file what you are looking for is on line #8039:
%1$s on %2$s
translation:
%1$s на %2$s
You can change it to: %1$s : %2$s in the .po file and then generate the .mo file (if you use poEdit)
(the original string is in wp-includes/widgets.php in line #976)
