I'm having the same problem also and I still have the issue after disabling my plugins and extensions on Firefox/Chrome/IE9.
Same issue on chrome, Facebook login isn't working for me.
I cant seem to login using facebook. After I put in the password it just stays there and doesnt load.
Exact same thing for a few days.
Clicking Facebook-login, then I'm brought to facebook to enter credentials. After pressing "login" I am brought to a completely white page at the adress:
or without hexcode:
If I manually return to imgur or use the back-button, I am still logged out. This worked fine for me about a week ago.
Customer support service by UserEcho