Then try "tools" "options " & "privacy". Is "accept cookies from sites" ticked? It should be. You can also select which sites you want to allow or ban on that page if you do not want "all sites" Also set "accept cookies" to "always" if it says "never"
Raider, i was set on not to be tracked, but that;s after changing it from what yours is now.
Thought i sussed it for a while leaving diynot and coming back,i was still signed in but an hour later................
In the same history box select "use custom settings for history" from the drop down menu, set it to that & you will get the options I mentioned previously.