184.108.40.206 isn't a banned IP address and what you managed to post the above post via!
You also recently logged in on a different IP address (also not banned). Also via "track user" in admin, I see a bunch of IP addresses (over 30 different ones) you've used in your history.
Baffling. You're clearly ok on the above IP you cited and another most recent one used, but that's a legit ban message. Your username isn't banned, your registered e-mail isn't banned and that IP address isn't banned!
I can only think you somehow got jumped into a different IP address that was banned. If it happens again, e-mail me at email@example.com
and I'll hit your profile to see the latest IP address used and see if that's on the ban list and remove it from the list.
PS The ban list is only about 150 IP addresses, which is a ban we put on when a spammer hits us (stops them re-registering and hitting us again).