Member Rara Avis
Both of those are controlled by cookies, Marina. When you reset them and click on the Go button, Athena automatically updates your cookies - and they should stay that way until you change again. The Trouble Ticket you just sent indicates 5 and 35, just as you want them.
You might want to read the article about cookies in the Troubleshooting area and see if anything rings a bell. For example, if you are using two different URLs to enter the forums, it's entirely possible you have two different sets of cookies.