Are you finding you get logged out after a spending a long period of time on the site? Or, does it happen at random, and sometimes shortly after logging in?
The more exact details you can provide, the better. I never get logged out (and I'm on multiple devices, on multiple ISPs) so trying to see what might resolve it.
Restart on the PC is one of the most common. Android phone is the most robust, rarely have a loss on it. 2 PCs that I have at home that usually keep a firefox window open at all times have intermittent losses, but can easily happen a couple of times a day. I do not seem to remember a time where I lose my login when I have stayed on the site for a period of time. It is usually when I come back to the site after being gone for some time....
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