how to answer a post?

When I am on the SL homepage and click on a thread, I get a page that tells me that I'm not logged in. Trying my SL name, password - not valid.
Ok searching and finally resetting password for the forums. So...I enter my name, copy/paste that password. And guess what, NOT valid.
How on earth am I to answer to a thread? I can only hope that I can at least POST this one. Took me long enough!

i had this problem myself at the sl blogrums..
i wasn't putting in my last name with my first name..

not sure if this is what is happening with you or if you are putting in your last name ..but it made me do a face palm when i seen i wasn't lol