I'll explain it.
URL type A;
http://forums.supercheats.c...c=124149 URL type B;
http://forums.supercheats.c...ssio.htm It doesn't matter which one you click, they lead to the same place. URL type A is converted into URL type B when you enter the topic. To go to a certain page in the topic, both URLs use an extension at the end ((?page=30)) to send you to the page.
When you go from URL type A to URL type B, it loses the extension. Without the extension telling it which page you want to go to, it defaults to the first page of the thread.
The only way to keep the extension is to stop using URL type A and start using the new URL type B. Bad thing is, URL type B is only used within the topic itself. Forums home page, Latest posts, the game forum containing the topic - They all still use URL type A.
This same thing messes with the reply, quote, and full edit screens within the topic. Since they're still based on URL type A, the only place they can send you after you submit the reply, quote, or full edit is to the gaming forum containing the topic.