Yeah, I had to go to an old message on my profile to back door into the message board. I read on the feedback forum that this is supposedly a temporary glitch and that CBS did not plan on eliminating the team message boards from the team sites.
There will be alot of unhappy users if this is not fixed relatively quickly. From what i've read there are alot of unhappy users already just based on the changes.
Personally, my only complaint is the font size is too big, and when you hit reply on a message, the original message and the user ID overlap.
It is surprising that CBS would not have identified these problems before going live.