Extend the session timeout for gallery sorting

I enjoy browsing the gallery sorted by "new". That's just my preference. If I've not been on in a while, there's many new images to look at. After a while, I'll notice that I'm seeing the same images with the occasional new image mixed in, as in, there are actual repeats. I only figured out today that what happened was my preference setting expired - I went back to gallery view and noticed it was set back to "hot". If you could either extend the session timeout by maybe an hour, or give us the option to pick a default sort, that'd fix it. Thanks!