Problems Responding

For some reason when I try to comment on someone else's profile, or even on my own to someone else, Blogger will not allow me to do it.
This is what happens:
 I type in my response in the comments part and hit reply. It makes me choose a a 'profile' when I select Google Account it sends me all the way back to the login page. I login, and then it wants the 'word verification'. From here I'm in a constant loop, of typing in the correct word and then logging back in and never get to post my comments.
If anyone has an idea about what the problem is, I'm willing to try anything at this point :)