My browser clears all cache and history whenever I close it. But that problem actually seems to be solved now. Instead I have a new problem. I can't be bothered to take screenshots again so I'll just describe it. Basically, for the Speedcubing in Melbourne thread it currently says "Zane 1 hour ago" for the last post when viewed from the Speedcubing Discussion page, however when I go into the thread it shows the last post from unzuki 2 hours ago. (As I post this it just changed to "aronpm 1 minute ago" from the Speedcubing Discussion page, but when I go into the thread it still shows the last post from unzuki).
EDIT: Ok apparently the original problem is still occurring; it just did it when I went into the Puzzle Theory subforum.