Hm, I just logged on to see that I have 4 new notifications from people who have mentioned me in comments.
Anyways after reading through them all, they still appear on the top right of the screen as if I haven't checked them yet. So it still reminds me that I have 4 new notifications even though I've already checked through them all.
It also seems the site is experiencing a few small glitches here and there as I navigate through the site. Like when I edit a comment some of the options like "bold" "italic" etc. Aren't even showing up.
Also when I click to go somewhere on the site, for a few seconds as the page is loading on the top right of the screen where my Account and Notification settings are, it'll say "Sign in/Join" as if I haven't logged in yet. But then when the page completely loads, it's normal again.
Just a heads up Gamespot, cheers.