I just found a solution to the blogger-commenting issues going on, over at Marianne's blog here. This is what she said to do:
If the comment box won't open, click it and press control and alt at the same time. If you are asked to sign in then uncheck the stay signed in box. You will then be able to comment as yourself, not anonymous, and you will stay signed in.
Please go check out Marianne's blog and let her know if this solution helps you =)
- Marie / Legojenta