I registered as my old (pre-relaunch) username "Sgt. Snackers".
Note the "." in the username. Although the registration page worked
fine and I can login, every time I try to do something requiring me
to be logged in, such as posting a reply, it asks me to login again.
I just noticed that registering under the alternative username
"Sgt Snackers" (no ".") works fine.
Possible bug in the site?