I've been having some strange behaviour too. Occasionally it says that I haven't filled in a necessary field. I hit back and submit again and it goes through.
Also, there was one thread I tried to access and all I got was the header up to the orange bar that says Page: 1, then immediately after, the other orange bar that says Page: 1 and the rest of the footer. No posts appeared. I sent the link to someone I was chatting with at the time and it worked properly for them, even showing that there were two pages, not one. I believe it was the @Lynn: pre-ordering thread? I haven't tested it since, at least not intentionally.
