My computer is running 24/7 but I do reboot it every other day or so. I leave my firefox browser up with all my tab windows running on my computer even when I am not at the computer. Also, I just noticed that after I walked away from my computer for awhile and came back, I clicked on the tab windows on my firefox browser and it did the same thing as before. The page is blank for a few seconds and then it opens up the webpage of that tab. It is as if I refreshed the page even though I didn't. I wanted to update this info, as well.