This has been an issue "for me" since this new forum community web app was introduced. I can't sign in from the blue nav bar above.
There is a link for "sign in", I click it, a little modal box drops down, my UN and PW are filled in, but the "Sign in" button is grayed out, and my mouse arrow has the universal "no" red circle with line through it.
I have to go to a log in page to then log into the forum.
Is this a known issue - or is it just me?