This started yesterday morning
(Obviously, I have no problem with meta StackOverflow; I have problems just with Stack Overflow.)
It also appears that not many other users have the problem because there is much recent activity shown on the home page.
I went to Stack Overflow this morning, and saw the StackExchange inbox had one item (white 1 in a red circle). I clicked it open, and it would not finish loading; eventually it just blanked out. (All Sites and Hot Questions load just fine.)
I went to this meta and my question yesterday about this problem is gone. I only showed three questions in my profile. I am supposed to have 4. I looked at the SE inbox using meta and saw the comment to my deleted question
When I click the comment I get what shown in the following screenshot.
Also I am able to see my question on Google Search, but it opens me back to the same Page not found.
I went and clicked all the header and all the footer links on SO and the only ones that work are either different domains or they have subdomains.
Around the time that the issue first started, I was showing as not logged in, but when I clicked log in it would show all the logos of different OpenID options but then a white notice would come across the top and I would pop back to the page I was on (home page) and be logged in. This happened twice without me clicking "logout." ("Logout" does not work, by the way.)
I cleared cookies from stackoverflow.com and now it says:
Welcome back myname, you've been logged in. Click here to refresh the page.
This must be the same white notice from my last edit. Problem is not fixed.
I logged out of my Google Account (the one my OpenID came from), and I cleared the cookies. I went back to Stack Overflow, and it shows me as logged in. I clicked on "log out" (open in new tab) and it just refreshed the home page showing me still logged in. I clicked it again (not new tab) and it logged me out, but it again says:
Welcome back George Bailey, you've been logged in. Click here to refresh the page.
I refreshed the page and clicked logout again and now it is hanging just like all the other pages.
When starting from scratch (no cookies), I can access the site just fine. When I click log in, I click Google, I enter the sign-in info, and click on Sign In, then the following happens:
POST https://www.google.com/accounts/ServiceLoginAuth HTTP 302 GET https://www.google.com/accounts/CheckCookie?.......... HTTP 302 GET https://www.google.com/accounts/o8/ud?.......... HTTP 302 GET https://stackoverflow.com/users/authenticate/?.................. HTTP 302 GET https://stackoverflow.com/questions/4269389/using-jpa-2-0-criteria-api-and-cast-causes-generated-jpql-to-fail-in-hibernate ***HTTP 504***
Now that I am logged-in, it stops working.
These URLs work: - https://stackoverflow.com/feeds, - https://stackoverflow.com/questions-all (and page numbers), - on the front page: the "Interesting," "Featured," "Hot," "Week," and "Mont"h tabs. - the 404 page for https://stackoverflow.com/all-questions.