This was a problem with the old forums, and I brought this up in the temporary discussions area when it was made known you'd auto-logout after 45 minutes of inactivity. A couple other people also stated it doesn't do it for them as well, but I don't know what browser they use.

Why is it that every other forums and site I use regularly asks if I want my log in details saved but this one doesn't? I do not want to retype both my username and password every time I have to log in.

Please check and see if there's a setting you can activate on your side of things that will trigger the feature. I'd rather not use an external password manager add-on.