Has anyone else been experiencing these Последнее problems?

1. Looking at the Обновления thread on a club, I'll see that a comment's been made to an article. But when I click on that Статья to read the newest comment, it doesn't appear.
2. Likewise, my main Обновления thread will say that there's been a response in a Форум I'm following. When I open that Форум I see no response.
3. The pop Тесты no longer give me Вопросы I haven't answered yet when they are still ones unanswered. When I get one I've answered before, I get an error message preventing me from even seeing it. Also, the same error message appears if I try to Комментарий on a Вопрос или see existing comments.

Can anyone help me? Thanks.