Blogger frustration

I have two Blogger frustrations that I am hoping someone can help me with...

1. Why can't I comment on some of your blogs?  This has been going on for some time now and it makes me CRAZY(er)!  I can't even comment on my OWN blog.  Seriously.
2. Does Blogger have any feature that allows me to password protect only individual posts, and not my entire blog?

OK, I feel better just getting that out there.

Your comments would be much appreciated.  (Assuming you can even comment...)