I find myself today unable to upvote or boost anything without immediately being sent to that maintenance page.
Edit: Oh, also, I just realized that I myself can't see upvotes on any thread and every thread also lists as having "0 comments". I have to click into the comment section to find that there are indeed comments.
That also applies to my own posted threads, which I am not receiving any notifications about for comments posted. So I probably won't even see your or anyone else's reply to this comment.