Undesirable timeout for topics appearing as New?

[oogje]

When I keep up with a topic throughout the day, the "Go to first new post" button works as I'd expect. But if i don't visit for a 6 hours or so then the button takes me to the end of the topic. It's as if after some inactivity period the forums update my last visited time or reset it.

Is there something I can do so the forums permanently remember the last time I visited a topic - or remember for a month or a week? I checked my Control Panel - maybe I missed something?

Thanks.

brian