Blogger Question

I promise we will soon be back to our regularly scheduled program of posts about my armpit hair and the like, but first I have a technical question for my blogging friends:

Why am I not able to leave comments on people's blogs?

For the past week or so, after I've written a comment and hit "post comment," Blogger takes me back to the main Blogger screen and makes me log in again. I do that. Then it takes me back to my comment screen where I have to type in a word verification.

Which I do.

Then it takes me back to the main Blogger screen and makes me log in again.

Which I don't do.

I do say a bad word.

Then I admit to myself that none of my comments are remotely interesting enough to warrant this much work.

So I log off.

Then I take a nap.

Please help me before I lose all of my friends.

Thanks!

P.S. This doesn't happen every time I try to comment, but maybe 1/2 to 2/3rds.