It's definitely a cookie issue. There is currently a time mismatch between cookies and the server thus things are a little messed up. I believe the delay is 8 hours so it should fix itself after 8 hours or so.
We are going to be replacing some hardware on our main server in Seattle where the forums are hosted so it's going to be taken down for a couple of hours tomorrow in order to fix the issue.
In the meantime, we've moved to London for a couple of days and thus there might be a little bit of a slowdown on CC and the forums.
The past 20 minutes might have been a bit weird with regards to apparant time travel, but it will all be settled shortly.
So I just finished moving everything back to our North American network and I noticed a couple of posts were added during the maintenance. Sorry about that, but those 1-2 replies are gone.
There may be some slowdowns over the next hour for those of you who are still connected to the UK server but probably not any longer than that. Most shouldn't see any issues.