So, I was going over earlier challenges, and I've found what I believe to be a bug in the Newbiew PHP Coder level. I don't want to ruin the challenge by disclosing the details here, so I'll just say this: I have 0's in my cookie. The way those play out can cause some problems, and I believe that it is because of these problems that it is not accepting my solution.
Btw, Sphinx - is there any other way of contacting you other than these forums to report bugs? I'd like to be able to divulge the details of my problem without risking giving away challenge details.