We've received word of some users unable to access the forums with a particular account. If you are experiencing this issue, please PM me (you can use the envelope icon below my second post) with the following:
1) Your Gamertag and "Unable to Access Forums" as the PM title.
2) If you have changed your Live ID in the past year
3) If you have changed your Live ID, please include:
a) Your current Live ID
b) Your old Live ID
4) A screenshot (or thorough description) of what you're seeing when you try to log on.
Thanks a lot guys!