I installed Win 8, and I'm using IE10. But when I visit some of my favorite forums and web pages (forum.tauri.hu, prohardver.hu, etc.) and I choose the "Keep me logged in" option, after browser restart, or in mid browsing, I get logged out, and have to re log in. Using another browser, I don't have a problem, but on my laptop only IE can play 720p or 1024p Youtube videos fluently.
I tried resetting, without success. But yahoo.com, live.com can keep me logged in.