My first complain is choice of color for highlighted links (when your mouse pointer is over a link - I think is is called hover style) - it makes the text almost unreadable - I think it would be better to choose darker color.
The second complain is that I no longer properly see russian characters - I see some other junk characters instead. In previous forum version I could see russian characters properly. (I actually can read and understand some russian - well about 30%-50%).
The third (remark) is that the "Reply", "Edit" and some other buttons are in russian language - even on English forum. I see no point of this since all other text, menu, etc is in English.
Other than that - I think the forum got better.