Lately Blogger has been rather rude to me. It won't let me stay signed in, and when I reply to comments, my replies never show up (at least that I can see).
I haven't had time to really sit down and investigate, so please accept my apologies if you comment and don't receive a reply to a question. Hopefully, I'll be able to resolve the problem in the near future. Or it will fix itself, as Blogger problems often do.